Pressing & Finishing
Clapper
A clapper is a block of hardwood, usually maple or beech, that you press onto a seam immediately after steaming it. It traps the heat and the moisture in the cloth and forces them to escape through the fibres rather than around them, which sets a sharp, flat seam that a hot iron alone cannot achieve. It is a small tool with an outsized effect on how professional a finished garment looks.
| Specification | Value |
|---|---|
| Material | Hardwood, maple or beech |
| Size | 15 - 25 cm long |
| Shape | Rounded corners, flat base |
| Weight | 400 - 800 g |
| Use | Seams, points, collars, pockets |
| Finish | Unsealed or lightly oiled |
Technical parameters
| Parameter | Detail |
|---|---|
| Action | Traps steam, forces it through the cloth |
| Pressure | Firm, hold 5 - 10 seconds |
| Timing | Apply while the seam is still steaming |
| Points | Use the corner for a collar point |
| Care | Wipe, do not soak |
| Storage | On the pressing station |
Safety
The clapper absorbs heat and steam and can be hot to the touch after use. Use the handle or the edges, not the pressed face, and let it cool before you put it away.
What it is for
A block of hardwood you press down on a steamed seam to trap the heat and flatten it. The most underrated tool on the bench.
Compatible fabrics
Compatible stitches
Working notes
- Steam the seam, then press the clapper down and hold it while the steam escapes.
- Use the corner to sharpen a collar point or a pocket corner.
- It works best on wool and cotton; less on synthetics.
- Pair it with a ham for curved seams that also need to be sharp.
Related tools
Steam Iron
The single most important tool in the room after the machine. Heat, moisture and pressure set the shape of a garment.
Tailor's Ham
A firmly stuffed curved cushion for pressing seams that are not flat, like darts, sleeve heads and hips.
Pressing Cloth
A thin cotton or silk cloth laid between the iron and the garment to protect the fibre from scorching and shine.