Doc #31 — Manual Printing Methods

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RECOMMENDED ACTIONS (BY ACTUAL URGENCY)

Phase 1 — Months 3–12 (preparatory, low urgency):

1. Include manual printing equipment in the national asset census (Doc #8). Inventory all surviving letterpress presses, type, screen printing equipment, Risograph machines, and offset lithographic presses. Identify skilled operators. (Low urgency — no manual printing is needed while laser printing is available, but this data is needed for transition planning.)

2. Retain and identify skilled practitioners. NZ’s letterpress, printmaking, and screen printing communities are small but active — art school lecturers, museum print workshop operators, commercial screen printers, hobbyist letterpress printers. Identify them through the skills census. (Low urgency but important — these people seed the training program.)

3. Secure type metal and type stocks. Surviving letterpress type is irreplaceable in the near term. Ensure museum and workshop type collections are not scrapped for metal recovery.

Phase 2 — Years 1–3 (development, moderate urgency):

4. Establish 2–3 pilot print shops using screen printing and stencil duplication — the lowest skill barriers and most available equipment. Begin producing administrative documents and simple reference materials.

5. Begin letterpress operator and compositor training at sites with surviving equipment (6–12 months for compositing competency, 3–6 months for press operation).

6. Begin type casting experiments using hand moulds and type metal (Doc #93) if surviving type stocks are insufficient.

7. Fabricate screen printing equipment — wooden frames, mesh stretching tools, squeegees — and expand to 5–10 sites.

8. Begin ink production from NZ materials (Doc #29, Section 3).

Phase 3 — Years 3–7 (full production):

9. Full manual print shop network operational — 5–10 regional production centres plus 10–20 community-level sites.

10. Transition offset lithographic presses to NZ-produced linseed oil ink and domestically prepared plates.

11. Ongoing training pipeline through apprenticeship programs (Doc #159).

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ECONOMIC JUSTIFICATION

Person-years of labour

Setup (one-time, Phase 2): Equipment inventory, relocation, pilot shop establishment, initial training of 20–30 workers, type casting and equipment fabrication. Total: approximately 18–34 person-years over 2–3 years.

Ongoing operations (annual, at full network): 5–10 shops with 5–10 workers each, plus ink production, training, and administration. Total: approximately 43–142 person-years per year.

Cost of not doing this

Without manual printing, NZ loses document reproduction entirely once toner is exhausted. The alternative is hand copying: approximately 10–20 handwritten pages per person per day versus 200–1,000 printed pages per person per day.³ Printing is 25–100 times more efficient. To match the manual printing network’s output by hand copying would require approximately 300–1,250 person-years per year. The setup investment (18–34 person-years) is recovered within months. The economic case is overwhelming.

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1. PRINTING METHODS COMPARED

Method	Speed (pages/day)	Quality	Setup complexity	Best application	NZ equipment
Letterpress	200–500	High	High — needs type, press, skill	Books, archival documents	Limited; museums, art schools, private shops
Screen printing	300–800	Moderate	Low — equipment fabricable	Posters, maps, short runs	Fabricable from NZ materials
Stencil duplication	500–2,000	Low-to-moderate	Low — waxed-paper stencils	Medium-run text (100–1,000 copies)	Some Risographs; mimeograph tech simple
Offset lithography	1,000–5,000	High	High — needs press, plates	High-volume runs	~1,200–1,500 commercial print shops4

Printing need	Recommended method
Recovery Library documents (new/revised)	Letterpress or offset lithography
Ration books, administrative forms	Stencil duplication or letterpress with stereotype plates
Maps, diagrams, illustrations	Screen printing
Posters, public notices	Screen printing
Newspapers, bulletins	Offset lithography or stencil duplication
Currency, official documents	Letterpress or intaglio

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2. LETTERPRESS PRINTING

2.1 How it works

Letterpress is relief printing — ink is applied to raised surfaces (metal or wood type, engraved blocks, or cast plates) and pressed directly onto paper. Gutenberg developed the technology in the 1440s and it remained dominant for over 500 years.⁵ The process produces sharp, dense, durable impressions.

2.2 NZ equipment (uncertain)

Surviving letterpress equipment exists at Canterbury Museum (Christchurch), Waikato Museum (Hamilton), Thames School of Mines, Ilam School of Fine Arts (University of Canterbury), Massey University (Wellington), and an unknown number of private workshops. The NZ Print Heritage Trust works to preserve this equipment and knowledge.⁶ NZ probably has between 20 and 100+ presses in various states of repair — this needs verification through the skills census.

2.3 Type: the binding constraint

A single page (2,000–3,000 characters) ties up that much type until printed and redistributed. A skilled compositor sets approximately 1,000–1,500 ems per hour (roughly equivalent to characters in most body text) — so each page requires 1.5–3 hours of typesetting before any printing occurs.⁷

Solutions to the type bottleneck:

• Type casting: New type from type metal (approximately 60% lead, 25% antimony, 15% tin).⁸ A skilled hand-caster using a hand mould produces approximately 3,000–4,000 characters per day — demanding work requiring precision moulds and matrices (copper or brass strikes of individual characters).⁹ Surviving Monotype or Linotype casting machines in museum collections could dramatically accelerate this if operational.
• Stereotype plates: A papier-mache mould (flong) pressed against set type, dried, and used to cast a metal plate duplicating the entire page.¹⁰ The type is freed for reuse while the plate is stored for reprinting. This was the standard newspaper and book reprinting method for over a century. Casting requires type metal and a casting box — both within NZ fabrication capability (Doc #93, Doc #91).

Type metal supply: Lead from old plumbing, battery plates, fishing weights. Antimony is scarcer — NZ has no significant domestic deposits and historically imported all antimony.¹¹ Tin from scrap (cans, solder). Alloy composition can be adjusted — reducing antimony content softens the type and shortens its useful life; reducing tin impairs casting fluidity and surface finish — so deviations degrade output quality progressively.¹²

2.4 Press types in NZ

• Platen press (e.g., Chandler & Price, Adana): Paper and type meet on flat surfaces. 200–500 impressions per hour. Small format (A5–A3).
• Cylinder press (e.g., Vandercook): Paper wraps a cylinder rolling over the type form. 500–1,000 impressions per hour. Larger format. Some survive in NZ art printing workshops.

2.5 Realistic output

With pre-set forms or stereotype plates: 200–500 pages per day. If typesetting is included: 50–100 pages per day. Letterpress cannot match laser printing for initial Recovery Library production, but it is well-suited to ongoing maintenance, revision, and high-quality new documents in the post-toner era.

2.6 Te reo Māori character set requirements

Te reo Māori is an official language of Aotearoa New Zealand and will be used in recovery-era official documents, educational materials, and community notices. Manual type systems must accommodate the full te reo Māori character set, which includes macronated vowels: Ā, Ē, Ī, Ō, Ū (uppercase) and ā, ē, ī, ō, ū (lowercase).¹³

Surviving NZ letterpress type sets were almost certainly cast without macronated vowels — these characters were not standard in English-language job printing. Letterpress operations should address this as a quality improvement during Phase 3:

1. Cast macronated sorts: A hand-mould with matrices for the ten macronated characters (5 upper, 5 lower) must be produced for each type size in use. Matrix production requires engraving into brass or copper — within the capability of a skilled metalworker (Doc #91) working from a model character. This is a quality improvement to implement once core letterpress operations are established.
2. Composing workaround: In the interim, a standard vowel can be overprinted with a separately set macron (a narrow rule or hand-cut slug). This produces acceptable results for body text if registration is tight.
3. Screen printing and stencil: No equivalent problem — te reo Māori characters are drawn or cut into stencils directly. Screen printing is therefore more immediately capable of producing correct te reo Māori text than letterpress from unaugmented English type sets.

Practical priority: Macrons in te reo Māori are phonemically significant — omitting them changes word meaning (e.g., keke “cake” vs kēkē “armpit”) and produces functionally incorrect text.¹⁴ Casting macronated sorts is therefore a reasonable quality improvement for Phase 3+, once core letterpress operations are running and compositor training is established. During Phase 2, the overprinting workaround (item 2 above) and screen printing (item 3) provide adequate interim capability for te reo Māori text. Macron sort fabrication should not compete with Phase 2 priorities such as agricultural equipment and basic press commissioning.

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3. SCREEN PRINTING

3.1 Why it is the priority method

Screen printing should be the first manual method established because:

1. Equipment is fabricable from NZ materials — no dependency on surviving pre-war equipment
2. Skill barrier is low — basic competency in 1–2 weeks, production quality in 1–3 months
3. Versatility — prints text, images, diagrams, maps on any paper quality including rough unbleached kraft
4. Ink flexibility — works with multiple NZ-producible formulations including water-based

3.2 Equipment

Screens: Wooden frames (radiata pine or steel) with stretched mesh. Synthetic polyester/nylon mesh from existing NZ stocks is standard; when exhausted, finely woven cotton, silk (from existing fabric stocks), or harakeke muka (Doc #100) may substitute. Performance gap: synthetic mesh achieves 60–120+ threads/cm with uniform tension and long life (thousands of prints); cotton and silk mesh typically achieve 30–60 threads/cm with less uniform tension and shorter life (hundreds of prints before degradation); harakeke muka mesh has not been tested for screen printing and its achievable thread count, tension uniformity, and durability are unknown — experimental verification is required before relying on it.¹⁵ A mesh count of 60–80 threads/cm is adequate for text printing; coarser mesh (30–50 threads/cm) is usable for posters and large-format work but produces visibly rougher text.

Squeegee: Rubber or urethane blade in a wooden handle. Recycled tire rubber (Doc #33) is a potential blade material — it is harder and less uniform than commercial squeegee urethane (Shore A 60–80), which may produce uneven ink deposition, but is adequate for coarser work (posters, large text) and improvable by selecting and cutting from consistent tread sections.

Stencils: Paper stencils (cut shapes, 50–200 prints per stencil).¹⁶ Painted screen filler (PVA glue, wax) for more durable stencils. Photo-emulsion for finest detail — while imported chemistry lasts.¹⁷

Ink: Lower viscosity than letterpress. Thinned linseed oil ink, water-based starch/casein ink, or pine resin ink (Doc #29, Section 3).

3.3 Output

300–800 impressions per day. Adequate text quality at 10+ point sizes. Each colour requires a separate screen pass. A single screen produces 200–2,000+ prints depending on stencil method. Main limitation: speed. For high-volume text, stencil duplication or letterpress is more efficient.

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4. STENCIL DUPLICATION

4.1 Risograph machines

The Risograph — a modern digital stencil duplicator — creates masters by thermally burning images into wax-coated sheets, then forces oil-based ink through the burned areas onto paper.¹⁸ Present in some NZ schools, churches, and offices, though in declining numbers. Capable of 1,000–5,000+ copies per master at speeds up to 120 pages per minute. Risograph ink and masters are imported and finite, but the machines bridge the gap between laser printing and fully domestic stencil duplication.

4.2 Traditional mimeograph

A wax-coated stencil is cut by typewriter or stylus, wrapped around an ink drum, and copies cranked out by hand or motor.¹⁹ The technology matters because its consumables can be produced domestically:

• Stencils: Thin paper coated with beeswax or paraffin (both NZ-available), cut by typewriter or stylus
• Ink: Thinned linseed oil with lamp black
• The machine: A cylinder with permeable surface, ink reservoir, and paper feed — within NZ fabrication capability (Doc #83)

Domestic stencil yield: 200–500 acceptable copies per wax stencil, with quality degrading progressively.²⁰

4.3 Typewriter integration

A typewriter cutting stencils is dramatically faster than hand-cutting with a stylus. NZ has an unknown but probably significant number of surviving typewriters in private hands and storage — no inventory exists, but typewriters were standard NZ office equipment through the 1980s and many were retained rather than discarded.²¹ Under recovery conditions, typewriters become valuable as stencil-cutting machines. The asset census (Doc #8) should include typewriters, and functional machines should be allocated to print shops.

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5. OFFSET LITHOGRAPHY

5.1 Why it matters

NZ has approximately 1,200–1,500 commercial print shops, many with offset lithographic presses.²² This is the largest installed base of printing equipment in the country and the highest-throughput manual method.

5.2 Plate production: the limiting factor

Modern offset uses imported aluminium plates with photosensitive coatings. Once stocks are exhausted:

• Hand-prepared metal plates: Image drawn or transferred onto zinc or aluminium using greasy ink/crayon, then treated with gum arabic to make non-image areas hydrophilic. This is the original lithographic technique. Performance gap: hand-prepared plates take 1–4 hours per plate versus minutes for photographic CTP; resolution is limited to what the artist can draw (adequate for text at 10+ point, poor for fine detail or halftone images); plate life is shorter (hundreds to low thousands of impressions versus tens of thousands for photographic plates). Functional for text-heavy and line-art work.²³
• Stone lithography: Flat limestone slabs — NZ has limestone deposits (Golden Bay marble, Oparure limestone in Waikato) but lithographic stone requires exceptional homogeneity and fine grain (historically sourced from Solnhofen, Bavaria); NZ limestone suitability for lithographic use is uncertain and would require testing.²⁴
• Existing plate stocks: Many NZ printers hold unexposed plates and chemistry that extend offset capability beyond CTP availability.

5.3 Ink and output

Linseed oil ink — the historical lithographic standard — works well for offset printing.²⁵ With NZ-produced ink and hand-prepared plates, press speed remains high (1,000–5,000+ impressions per hour) but the bottleneck shifts to plate preparation. Offset is therefore best used for high-volume runs: newspapers, government forms, updated Recovery Library editions requiring 500+ copies.

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6. ADDITIONAL METHODS

Block printing (woodcut/linocut): Carving images into wood (rimu, totara, kahikatea for fine work) or linoleum (existing NZ floor covering stocks). Best for illustrations, diagrams, maps, and cover pages — not efficient for text.²⁶

NZ has a significant existing workforce for block production: whakairo (Māori wood carving) practitioners. Tohunga whakairo (master carvers) and their apprentices — trained through wānanga and marae-based programmes — routinely work at fine detail scales in both surface relief and deeply undercut forms, both directly relevant to printing block production. Their timber selection knowledge is particularly valuable: different NZ native timbers (rimu, totara, kauri, pūriri, maire) have significantly different grain structures, densities, and cutting characteristics that affect block durability and impression quality, and whakairo practitioners’ experience with grain behaviour under cutting loads translates directly to block printing.²⁷ Identifying these practitioners should be part of the skills census (Doc #8) and print shop workforce planning.

Hectograph (spirit duplication): Gelatin pad method using aniline dye masters. Yield approximately 40–80 copies per master, degrading across the run.²⁸ NZ can produce gelatin from animal hides and bones — the rendering process (prolonged simmering, filtering, drying) requires only heat and water but yields are modest and the product must compete with food-grade gelatin demand.²⁹ Aniline dyes are imported synthetic chemicals and not NZ-producible; hectograph is therefore useful only while existing dye stocks last.

Carbon paper duplication: Existing stocks or improvised (thin paper coated with lamp black in beeswax carrier) allow 2–5 simultaneous copies when typing or writing.³⁰ Extends typewriter utility.

NZ native plant pigments for colour printing: Domestic ink production (Doc #29) focuses on lamp black in linseed oil. For multi-colour work (posters, maps, warning notices) or situations where lamp black or linseed oil supply is constrained, NZ native plant pigments provide supplementary colorants. Documented sources include: pōhutukawa bark (Metrosideros excelsa, rust to brown), tānekaha (Phyllocladus trichomanoides, warm tan to brown), kiekie (Freycinetia banksii, yellow — fragile, fades quickly), māpou (Myrsine australis, dark blue-black from berries — requires testing for print adhesion), and harakeke (Phormium tenax, yellow-green to olive — primarily a dye, testing needed for fixation).³¹ Colorfast binding to paper requires a mordant (alum, iron, or tannin — all NZ-available) and a binder (starch, casein, or dilute resin).³² Recovery value is moderate: black and earth tones from bark extracts cover the most important colour requirements. Knowledge of which plants produce useful colorants, processing methods, and seasonal timing is held by Māori dye practitioners — kairaranga (weavers) and tohunga whakairo — and is not comprehensively documented in published sources. Accessing it requires engaging practitioners through the framework described in Doc #160 (Heritage Skills Preservation).

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7. TRAINING AND WORKFORCE

7.1 Skill requirements

Method	Training (basic)	Training (production)
Screen printing	1–2 weeks	1–3 months
Stencil duplication	1–2 days	1–2 months
Letterpress — press	2–4 weeks	3–6 months
Letterpress — composition	2–3 months	6–12 months
Offset lithography	1–2 months	6–12 months
Ink making	1–2 weeks	1–3 months

7.2 Existing knowledge holders

• Letterpress: Art school lecturers/technicians, museum workshop operators, NZ Print Heritage Trust, fine-press printers — probably numbering in the dozens
• Screen printing: Commercial screen printers (textiles and signage), art school printmaking departments
• Offset lithography: Commercial print operators — the largest group, numbering in the hundreds³³
• Bookbinding: A small number of professionals, plus library conservation departments (Alexander Turnbull Library, Hocken Library, Archives NZ)

Each experienced practitioner can train 3–5 apprentices per year (Doc #157). The goal: a workforce of 100–300 manual printing practitioners within 3–5 years.

7.3 Staged training

• Phase 2 (Years 1–2): Train 20–30 screen printers and stencil operators (lowest skill barrier)
• Phase 2–3 (Years 2–4): Train 10–20 letterpress compositors and press operators
• Phase 3+ (Years 3–7): Train 10–20 offset press operators and plate-makers

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8. PRINT SHOP INFRASTRUCTURE

A functional manual print shop requires 50–150 m² of dry, well-lit, ventilated space (the lower end for a single-press screen printing operation; the upper end for a letterpress or offset shop with composition, press, ink preparation, drying, and binding areas).³⁴ Equipment per shop: 1–2 presses, ink preparation station, type cases (letterpress) or screen preparation station (screen printing), paper cutting equipment, drying racks, and binding station (awl, needles, thread, adhesive).

Recommended network (see also Doc #29, Section 4.3):

• Tier 1 (3–5 sites): Auckland, Wellington, Christchurch, possibly Hamilton and Dunedin — best equipment, largest workforces, majority of Recovery Library and government production
• Tier 2 (5–10 sites): Regional towns (Tauranga, Napier-Hastings, New Plymouth, Palmerston North, Nelson, Invercargill) — local administrative printing, newsletters, training materials
• Tier 3 (10–20+ sites): Schools, marae, community halls with basic screen printing or stencil capability — notices, posters, forms, curriculum materials. Equipment locally fabricated.

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CRITICAL UNCERTAINTIES / KEY RISKS

Uncertainty	Why it matters	How to resolve
NZ letterpress equipment inventory	Determines whether letterpress is a major or minor production method	National asset census (Doc #8)
Risograph machine count	Risographs are the most efficient stencil duplicators; unknown how many survive	Skills census inventory
Type and type metal stocks	Insufficient type limits letterpress to stereotype work	Inventory museums, workshops, private collections
Offset press operability	Offset is highest-throughput; its availability determines peak capacity	Census of commercial print industry
Screen mesh availability	Determines how long high-quality screen printing continues before fabric mesh transition	Inventory screen printing supply stocks
Harakeke mesh suitability	If harakeke substitutes for synthetic mesh, screen printing becomes fully NZ-sustainable	Experimental trials
Ink quality at production scale	NZ-produced ink untested at volume; batch variation may cause problems	Pilot production and iterative formulation (Doc #29)
Offset plate alternatives	If hand-prepared plates prove too slow, offset capacity drops substantially	Experimental plate-making
Workforce training pipeline	If fewer skilled practitioners survive than assumed, training takes longer	Skills census; begin training early

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CROSS-REFERENCES

• Doc #5 (Printing Supply Requisition): Laser printing stocks and transition timeline. Doc #5 covers Phase 1; this document covers Phase 2–3.
• Doc #156 (Skills Census): Equipment inventory and workforce availability.
• Doc #29 (Paper and Ink Production): The supply side — domestic paper and ink. Must be read with this document.
• Doc #30 (Print Optimization): Optimization principles that carry forward to manual methods.
• Doc #33 (Tires): Crumb rubber as potential squeegee material.
• Doc #91 (Machine Shop Operations): Fabrication of print shop equipment.
• Doc #93 (Foundry Work): Type casting and stereotype plate casting.
• Doc #100 (Harakeke Fiber): Harakeke muka as potential screen mesh and paper fibre.
• Doc #102 (Charcoal Production): Carbon black pigment source.
• Doc #157 (Trade Training): Training framework for printing apprenticeships.
• Doc #160 (Heritage Skills Preservation and Transmission): Letterpress and whakairo as heritage skills requiring urgent knowledge capture; integration framework for Māori traditional knowledge including plant pigment practitioners and whakairo carvers (§4.5–4.7).

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1. NZ letterpress equipment is documented by the NZ Print Heritage Trust, Canterbury Museum, and Waikato Museum, among others. No comprehensive national inventory exists. A systematic inventory through the national asset census (Doc #8) is essential. Source: Museum collection records; NZ Print Heritage Trust.↩︎

2. Risograph and mimeograph machine counts in NZ are not publicly reported. Risograph machines were common in NZ schools and churches in the 1990s–2000s but have been progressively replaced by laser MFCs. The surviving number is uncertain. Source: General office equipment industry knowledge.↩︎

3. A skilled copyist produces approximately 10–20 pages per day of neat handwritten text. Printing output: per-method rates in Section 1. The 25–100x efficiency ratio is derived from the ratio of these ranges. Source: De Vinne, T.L. (1904), “The Practice of Typography,” Century Company; general printing industry data.↩︎

4. NZ’s commercial printing industry comprises approximately 1,200–1,500 businesses, many operating offset lithographic presses. The industry has contracted significantly but substantial equipment remains. Source: Stats NZ business demography data; Printing Industries NZ.↩︎

5. Johannes Gutenberg developed movable type printing in Mainz, Germany, circa 1440–1450. Source: Man, J. (2002), “The Gutenberg Revolution,” Bantam.↩︎

6. The NZ Print Heritage Trust works to preserve NZ’s printing history, including equipment, type, and institutional knowledge. Source: NZ Print Heritage Trust records.↩︎

7. Typesetting speed: a skilled hand compositor sets approximately 1,000–1,500 ems per hour. A typical page of 2,000–3,000 characters requires 2–3 hours. Source: De Vinne (1904); historical printing trade data.↩︎

8. Type metal composition: text type approximately 60% lead, 25% antimony, 15% tin. Stereotype metal: approximately 80% lead, 15% antimony, 5% tin. Source: Moxon, J. (1683), “Mechanick Exercises;” general typography references.↩︎

9. Hand type casting rates: approximately 3,000–4,000 characters per day for an experienced caster. Source: Reed, T.B. (1887), “A History of the Old English Letter Foundries.”↩︎

10. Stereotyping became standard for reprinting from the 1830s onward. Source: Moran, J. (1973), “Printing Presses: History and Development from the Fifteenth Century to Modern Times,” University of California Press.↩︎

11. NZ has no significant antimony deposits. Historical antimony production was nil; all antimony consumed in NZ was imported, primarily from China and Australia. Source: GNS Science mineral resource assessments; Christie, A.B. and Brathwaite, R.L. (2003), “Mineral Commodity Report 23 — Antimony,” NZ Mining, 33, pp. 24–31.↩︎

12. Type metal composition: text type approximately 60% lead, 25% antimony, 15% tin. Stereotype metal: approximately 80% lead, 15% antimony, 5% tin. Source: Moxon, J. (1683), “Mechanick Exercises;” general typography references.↩︎

13. Te reo Māori orthography: The standard orthography for te reo Māori uses the macron (tohutō) to indicate long vowels: ā, ē, ī, ō, ū (and uppercase equivalents). Macron use in official contexts has been standard since the 1990 adoption by Te Taura Whiri i te Reo Māori (Māori Language Commission). Omitting macrons in official documents is incorrect and, for words where vowel length changes meaning, produces errors: e.g., keke (cake) vs kēkē (armpit). See: Te Taura Whiri i te Reo Māori, “He Pātaka Kupu: Te Kai a te Rangatira” (Māori dictionary), Raupo; Bauer, W. et al. (1993), “The Reed Reference Grammar of Māori,” Reed Books.↩︎

14. Macron omission in te reo Māori: The Māori Language Commission’s position is that macrons are not optional punctuation but are integral to correct spelling. In a recovery context, documents produced for official use, community distribution, or educational purposes in te reo Māori must use correct orthography. This is a practical requirement with both respect and accuracy dimensions — mispelled te reo produces incorrect or misleading text.↩︎

15. Screen mesh specifications: 60–80 threads/cm for text and line work. Commercial screen printing ranges from 30 threads/cm (coarse) to 150+ threads/cm (fine halftone). Source: Biegeleisen, J.I. (1971), “Screen Printing,” Watson-Guptill.↩︎

16. Paper stencil durability: 50–200 prints depending on paper weight, ink type, and pressure. Waxed paper stencils are more durable (100–200+). Source: General printmaking practice.↩︎

17. Photo-emulsion screen printing uses diazo-based or SBQ-based sensitizers. The chemistry is well-established but the chemicals are imported and not NZ-producible in the near term. Source: Standard screen printing technical references.↩︎

18. Risograph machines were introduced by Riso Kagaku Corporation (Japan) in 1980. They use a thermal head to create stencil masters and soy-oil-based ink. Source: Riso Kagaku Corporation product information.↩︎

19. The mimeograph was invented by Thomas Edison in 1876 (US Patent 180,857) and remained a primary document reproduction technology through the 1970s. Source: General printing and office equipment history.↩︎

20. Wax stencil yield of 200–500 copies assumes careful operation with properly formulated ink. Quality degrades progressively. Source: Proudfoot, W.B. (1972), “The Origin of Stencil Duplicating,” Hutchinson.↩︎

21. NZ typewriter inventory: No systematic count exists. Typewriters were standard NZ office and government equipment from the early 20th century through the 1980s. Many were retained by private owners after replacement by computers. The number surviving in usable condition is unknown but probably in the thousands nationally, based on NZ’s office equipment installed base during the typewriter era. The asset census (Doc #8) should include typewriters. Source: General NZ office equipment history; figure requires verification through census.↩︎

22. NZ’s commercial printing industry comprises approximately 1,200–1,500 businesses, many operating offset lithographic presses. The industry has contracted significantly but substantial equipment remains. Source: Stats NZ business demography data; Printing Industries NZ.↩︎

23. Lithography was invented by Alois Senefelder in Munich in 1796. Metal plate lithography developed in the 19th century. Source: Senefelder, A. (1819), “A Complete Course of Lithography.”↩︎

24. NZ limestone deposits: Golden Bay (Takaka marble) and Oparure (Waikato) are the major NZ limestone sources, currently quarried primarily for cement and agricultural lime. Lithographic stone historically required the exceptionally fine-grained, homogeneous Jurassic limestone from Solnhofen, Bavaria. NZ limestone is generally coarser-grained and less homogeneous. Whether any NZ deposits can produce usable lithographic stone is unknown and would require systematic sampling and testing. Source: Christie, T. and Barker, B. (2007), “Mineral Wealth of New Zealand,” GNS Science; general lithographic printing references.↩︎

25. Linseed oil has been the primary lithographic ink vehicle since lithography’s invention — its hydrophobic nature is fundamental to the lithographic principle. Source: Thompson, B. (2004), “Printing Materials: Science and Technology,” Pira International.↩︎

26. Woodblock printing predates movable type by centuries. The oldest surviving printed text is the Chinese Diamond Sutra (868 CE). Source: General printing history.↩︎

27. Whakairo (Māori wood carving) is one of the most technically demanding of the traditional Māori arts. Carvers work with a range of NZ native timbers — rimu (Dacrydium cupressinum), totara (Podocarpus totara), kauri (Agathis australis), pūriri (Vitex lucens), and others — each with different grain structures, densities, and cutting characteristics. This timber knowledge, accumulated across generations of carving practice, is directly transferable to woodcut block production for printing. See: Simmons, D.R. (1985), “Whakairo: Māori Tribal Art,” Oxford University Press; Mead, H.M. (ed.) (1984), “Te Maori: Maori Art from New Zealand Collections,” Heinemann.↩︎

28. The hectograph was invented in the 1870s. Yield of 40–80 copies per master is typical, with quality degradation across the run. Source: Proudfoot (1972).↩︎

29. Gelatin production from animal hides and bones is a well-established process: raw material is cleaned, soaked in acid or alkali, simmered for hours to extract collagen, filtered, and dried. NZ’s livestock industry provides ample raw material. The process requires only heat, water, and time, but competes with other uses for animal byproducts (tallow for soap and candles, bone for tools and fertiliser). Source: Ward, A.G. and Courts, A. (1977), “The Science and Technology of Gelatin,” Academic Press.↩︎

30. Improvised carbon paper: thin tissue paper coated with a mixture of lamp black (or other fine carbon) suspended in melted beeswax or paraffin produces a functional carbon paper. The technique dates to the 19th century and was the basis for early commercial carbon paper. Copy quality degrades with each additional sheet: 2–3 legible copies is typical; 4–5 possible with firm pressure and thin paper. Source: Rhodes, B. and Streeter, W.W. (1999), “Before Photocopying: The Art and History of Mechanical Copying 1780–1938,” Oak Knoll Press.↩︎

31. Plant-based colorants from NZ native species: The primary sources for this information are ethnobotanical records of harakeke and fiber dyeing practices (held by kairaranga), and general ethnobotanical literature. Key references: Best, E. (1942), “Forest Lore of the Maori,” Dominion Museum Bulletin 14 — documents plant uses including colorants; Brooker, S.G., Cambie, R.C., and Cooper, R.C. (1981), “New Zealand Medicinal Plants,” Heinemann — includes some colorant species; Te Rangi Hiroa (Sir Peter Buck) (1950), “The Coming of the Maori,” Whitcombe and Tombs — documents traditional use of plant materials. Many colorant sources are documented in practitioner knowledge rather than published literature and must be accessed through engagement with kairaranga (weavers) and tohunga whakairo.↩︎

32. Mordanting and ink fixation: The chemistry of natural dye fixation using mordants (alum, iron, tannin) is well-established in the textile dyeing literature and applies to paper surfaces with modifications. Paper is more absorbent than textile fiber and requires binders (starch, casein, gum arabic) to produce a printable ink with adequate adhesion and drying. The combination of natural colorant + mordant + binder constitutes a functional printing ink for coarser applications. See: Cannon, J. and Cannon, M. (1994), “Dye Plants and Dyeing,” Timber Press; general natural dyeing references.↩︎

33. NZ’s commercial printing industry comprises approximately 1,200–1,500 businesses, many operating offset lithographic presses. The industry has contracted significantly but substantial equipment remains. Source: Stats NZ business demography data; Printing Industries NZ.↩︎

34. Print shop space requirements: 50 m² is the minimum for a single-press screen printing operation (press station, ink preparation area, drying rack, work table). 100–150 m² is typical for a letterpress or offset shop with composition area, press, ink station, paper storage, drying, and binding. Historical NZ printing offices varied widely but purpose-built job printing shops in the 19th–early 20th century typically occupied 80–200 m². Source: General printing trade practice; Moran, J. (1973), “Printing Presses,” University of California Press.↩︎