FINISHING & DECORATION

Hot Stamping Tool

A heated die and a press, or a heated hand tool for small work.

5Finishing stage Rank 19 of 28

Line drawing

Specification
Temperature range	Ambient to 200 °C
Control	Thermostat, ± 5 °C on a good unit
Die area	Up to 200 × 300 mm on a small press
Pressure	Adjustable, 1–5 MPa
Dwell	0.4–3.0 seconds, timed
Heat-up time	8–20 minutes
Die materials	Brass, magnesium, steel, type metal
Hand tools	For spine lettering, 30–80 mm dies

Working parameters
Temperature	Ambient to 200 °C
Dwell	0.4–3.0 seconds
Pressure	1–5 MPa
Suitable stock	Paper, board, cloth, leather
Processes	Foil stamping, blocking, blind impression, debossing
Compatible materials	Pigment and metallic foils, real gold leaf
Die tolerance	Flat to 0.05 mm across the die face
Cycle time	Roughly 8–15 seconds per impression by hand

Overview

A hot stamping tool is a die holder with a thermostatically controlled heater. The die — type, brass, or a magnesium plate — is brought to temperature, foil is laid over the work, and the die comes down under pressure for a measured dwell.

Three variables have to be right at once: temperature, pressure and dwell. Change any one and the other two need adjusting. This is why foil stamping has a reputation for being fiddly. It is not fiddly — it is a three-variable problem and people try to solve it one variable at a time.

5Finishing: Foil, gilding, embossing and edge decoration.

Safety

Before you use itThe die head reaches 160 °C and looks identical to a cold one. Assume it is hot, always.

Before you use itFoil carrier film and any plastic on the bench will melt onto the die. Keep the work area clear.

Before you use itDo not leave a heated press unattended. Most workshop fires start this way.

Using it well

Set the temperature, then adjust pressure, then dwell — in that order. Changing temperature to fix a pressure problem will chase you round the same loop all afternoon.
Build a test strip of ten impressions at different settings and keep it with the die. Next time you use that die you have a starting point instead of a guess.
Wipe the die between impressions once it is cold. Foil residue builds up and starts to block the fine detail.

What it works with

Papers and substrates

Card 250–400 gsm
Cotton rag
Book cloth
Leather

Type and fonts

Brass type 6–72 pt
Magnesium plates for large areas

Processes

Foil stamping
Blind blocking
Debossing
Spine lettering

Note. Specifications are conventional working ranges for this class of tool, not a measurement of any particular machine. Follow the instructions that came with your own equipment, and treat every figure here as a starting point to check rather than a limit to trust. Nothing on this page is for sale and no manufacturer had any input into it.

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