PRINTING PRESSES & TYPE

Letterpress Type Set

Individual sorts of metal, wood or resin, set by hand, one character at a time.

1Composition stage Rank 3 of 28
Line drawing of a letterpress type set
Line drawing
Specification
Sizes6 pt to 72 pt in metal; to 15 pica in wood
Body height23.3 mm (0.918 in), all materials
MaterialsLead alloy, hardwood, photopolymer resin
Set widthMeasured in ems, based on the body size
NickGroove on the front face, identifies orientation
Lead alloyRoughly 70 per cent lead, 20 antimony, 10 tin
Case layoutCalifornia job case for lowercase and caps
StorageType case, drawer, or galley, always flat
Working parameters
Body height23.3 mm
Size range6–72 pt metal, 6–150 pt wood
MaterialsLead alloy, wood, photopolymer
Suitable stockAny paper the press will take
ProcessesHand composition, locking up, proofing
Compatible materialsWorks with every press in this catalogue
Characters per caseRoughly 180 sorts in a standard California case
DurabilityThousands of impressions in lead; hundreds in resin

There is a simulator for this. Type Composition runs the same relationships in 3D, so you can change a number and watch what it does to the result.

Open Type Composition
Overview

Hand-set type is the original process and still the only one that produces the crisp, slightly irregular edge that identifies letterpress. Each character is a separate piece — a sort — with a raised printing face on a rectangular body. The body height is fixed at 23.3 mm, the type height, so that any combination of sorts locks up to exactly the same printing plane.

Three materials are in common use. Foundry and Monotype lead alloys give the sharpest impression and last for decades. Wood type is cut for display sizes where metal would be too heavy. Photopolymer and resin plates are made from digital artwork and are how most contemporary studios print anything with a lot of detail.

1Composition: Setting type, character by character, to a measure.

Safety

Before you use itLead type is a lead alloy. Handle it with gloves where the metal is worn or dusty, never eat or drink over a type case, and wash your hands after setting. Lead dust from worn type is the exposure route, not the solid metal.
Before you use itA full case of type weighs 15–25 kg. Lift it flat, with both hands, and never by one corner.
Before you use itWood type is thin at the feet and splits. Do not drop it into a case; lay it down.

Using it well

  • Set upside down and right to left, the way it prints. Every compositor works this way and it stops you setting a line backwards.
  • Sort your case by frequency, not alphabetically: e, t, a, o, i, n in the easiest reach. A California job case is laid out this way for a reason.
  • Wipe each sort as you take it out. A single piece of grit under a sort lifts the character next to it and shows in the print.

What it works with

Papers and substrates

  • Any stock the press accepts

Type and fonts

  • Any typeface available in the chosen material
  • Mixing faces from different foundries is normal

Processes

  • Hand composition
  • Lockup in a chase
  • Proofing
  • Long runs in lead