Ask a master tailor for the single most underrated skill in garment making and the answer is often the same: pressing. Not ironing, pressing. The two are different operations, and confusing them is one of the most common reasons a carefully sewn garment still looks homemade. Pressing as you go sets every seam, shapes the cloth, and builds a polish that no amount of final ironing can recover.
This reference explains the distinction, the tools that make pressing effective, and how to press without damaging fabric. The construction techniques behind Minerva Patterns' garments, drafted in DXF AAMA, PLT and PDF, all assume that each seam is pressed as it is sewn.
The fundamental difference
Ironing is a sliding motion, moving the iron back and forth across fabric to smooth out wrinkles. Pressing is a lifting and lowering motion, setting the iron down with heat, steam and pressure, holding, then lifting it straight up. The hands do not slide.
The distinction matters because sliding distorts and stretches fabric, especially on bias edges and curved seams, while pressing shapes it in place. During construction you almost always want to press, not iron.
Why press as you sew
Each seam should be pressed before it is crossed by another. Pressing sets the stitches into the fabric, opens or directs the allowances, and lets you see the seam clearly before building on it. A seam crossed by a second seam without being pressed first cannot be properly flattened afterward.
This habit, pressing at every stage rather than only at the end, is the single biggest difference between an amateur and a professional finish. The garment is essentially built and pressed in the same breath.
Essential pressing tools
Effective pressing relies on a small kit that lets you support the fabric in three dimensions rather than flattening curves into the board.
- Tailor's ham: a firm curved cushion for pressing darts, curved seams and shaped areas.
- Seam roll: for pressing long seams open without imprinting the allowances onto the right side.
- Sleeve board: a narrow board for pressing sleeves and small tubular areas.
- Clapper: a smooth wooden block that holds heat and pressure in a seam to flatten and sharpen it.
- Point presser: for pressing open seams in collars, lapels and points.
- Pressing cloth: to protect fabric from shine and scorching.
Steam, pressure and the clapper
Heat softens fibres, steam relaxes them, and pressure sets the new shape. A clapper exploits this sequence: you steam a seam, then press the clapper down on it and hold, trapping the heat and moisture while the fibres cool under pressure. The result is a crisp, flat seam on even bulky wool.
This is how tailors achieve knife-sharp edges on lapels and pocket flaps without scorching or shine. The wood cools the fabric quickly while holding it flat, locking in the press.
Pro tip
Let pressed areas cool completely before handling them; fabric takes its set as it cools, and moving it warm undoes the press.
Protecting the fabric
Different fibres demand different heat. Always work at the lowest temperature that does the job, test on a scrap, and use a pressing cloth to prevent shine, scorching and iron imprints, especially on dark or smooth fabrics.
Press from the wrong side wherever possible. When you must press from the right side, a cloth between iron and fabric is essential, and on napped fabrics such as velvet a needle board or the garment's own surface protects the pile.
Frequently asked questions
What is the difference between pressing and ironing?
Ironing slides the iron across the fabric to remove wrinkles; pressing lifts and lowers the iron with heat, steam and pressure to set seams and shape cloth without sliding. During construction you press rather than iron.
Do I really need a tailor's ham and clapper?
For shaped, professional results, yes. A ham presses curves in three dimensions instead of flattening them, and a clapper sets crisp, flat seams on heavy fabric. They are inexpensive tools that markedly improve the finish.
How do I avoid shine when pressing?
Press from the wrong side where possible, use a pressing cloth between the iron and the fabric, keep the temperature as low as the job allows, and let the fabric cool before moving it.
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