Paper stock is not a secondary decision in letterpress work. The press can be perfectly inked and the type perfectly set, yet the wrong sheet will absorb colour unevenly, resist impression, or crack at the fold. Understanding how paper interacts with a letterpress die changes every subsequent step of the process.

Why Paper Matters More in Letterpress Than in Offset

Offset lithography transfers ink to paper through a blanket at minimal pressure. Letterpress is different: the printing surface contacts the sheet directly under measurable force. That contact compresses the paper fibres and, when pushed far enough, creates the characteristic debossed impression many designers deliberately seek.

This means the paper must be able to accept that compression without cracking, splitting, or ghosting adjacent areas. The characteristics that make a sheet good for letterpress — high cotton content, good bulk, toothy or vellum surface — differ from what works well in digital or offset printing.

Fibre Content

Papers divide broadly into wood-pulp sheets and cotton-rag sheets. For letterpress, cotton rag is the standard recommendation at most specialty studios.

Cotton Rag Papers

Cotton fibres are longer and more flexible than processed wood pulp. A sheet made from 100% cotton — such as Crane's Lettra, Stonehenge, or Reich Savoy — compresses without shattering. The impression holds its edges cleanly rather than spreading. Cotton also ages without yellowing under normal archival conditions, which matters for wedding stationery and keepsake cards.

Wood-Pulp Uncoated Papers

Uncoated offset papers like Domtar Lynx Opaque or Rolland Opaque50 (both produced in Canada) can work well for shorter impression depths. They are considerably less expensive and are stocked widely by Canadian paper merchants. However, they compress less gracefully and can show more variation in impression when the press is pushing hard.

Canadian Paper Distributors

  • Domtar Corporation — produces uncoated papers at mills in Quebec and Ontario
  • Resolute Forest Products — specialty grades available through distributors
  • Paper and Fancy Inc. (Toronto) — stocks Crane, Fabriano, and Hahnemühle
  • Kelly Paper (Vancouver) — letterpress-specific stock on hand

Weight and Caliper

Paper weight in Canada is commonly expressed in grams per square metre (gsm). For letterpress wedding invitations and stationery, 220–320 gsm is the typical working range. Lighter sheets (under 160 gsm) are possible but tend to cockle under the impression when humidity fluctuates.

Caliper — the physical thickness of a sheet — matters more than weight for impression depth. Two papers at 300 gsm can have significantly different calipers depending on their fibre structure and calendering. When ordering samples, request both gsm and caliper measurements.

Common Weight Ranges by Use

  • Business cards: 280–350 gsm / cotton rag preferred
  • Flat cards (thank-you, notes): 220–280 gsm
  • Wedding invitations: 280–320 gsm
  • Envelopes (lined): 80–100 gsm text-weight liner, 100–130 gsm outer

Grain Direction

During paper manufacture, fibres align in the direction the web moves through the machine — this is grain direction. A sheet folds and curves more easily along the grain than against it.

For letterpress cards that will be folded, the grain should run parallel to the fold. A sheet folded against the grain will crack or produce a rough, uneven fold line. When ordering sheets or parent sizes for cutting, confirm grain direction with the supplier and mark it on the sheet before printing.

The simplest grain test: bend a corner of the sheet gently in both directions. It offers less resistance along the grain direction.

Surface Texture

Letterpress ink sits on the surface of the paper rather than being absorbed into it (as in inkjet). A toothy or vellum surface provides enough texture for the ink to key into without spreading. Smooth or super-calendered surfaces can cause ink to skid or lay unevenly at the impression.

Common surface descriptors and their letterpress compatibility:

  • Vellum / toothy: Recommended. Good keying, slight texture visible in the finished piece.
  • Smooth / satin: Works with careful ink management. Impression does not read as well visually.
  • Felt-finish: Good for impression depth; fibres add character.
  • Laid: Textured parallel lines in the sheet. Creates an interesting visual effect under letterpress.
  • Coated / gloss: Not suitable. Ink adhesion is poor and impression does not show.

Canadian Climate Considerations

Canadian winters bring very low indoor humidity. In an unhumidified studio in January, relative humidity can fall below 20%. Paper acclimates quickly to the environment: sheets stored at low humidity will be dry and brittle; sheets moved from a warm car into a cold studio will condense moisture on their surface.

Best practices for paper storage and conditioning in Canadian studios:

  • Store paper flat in sealed boxes, away from exterior walls
  • Allow paper to acclimatize in the print room for 24–48 hours before printing
  • In winter, aim for 40–50% relative humidity in the pressroom using a room humidifier
  • Do not leave paper on the feed pile overnight during humid summer months — ambient moisture can cause curl
Close-up of aged textured paper surface
Paper surface texture is a critical variable in letterpress work. Wikimedia Commons / CC BY 2.0

Ordering Samples Before Committing

Most specialty paper distributors in Canada supply sample packs or swatch books. Before ordering a full ream or carton, request samples and run test impressions on your specific press at the planned impression depth. What works on a Vandercook proof press may behave differently on a platen press, and vice versa.

When testing, print the same form at progressively deeper impressions and note where the paper begins to crack, spread, or ghost. This gives a working impression limit for that specific sheet.

External References