Making a Paper Pattern and Transferring It to Leather

Every leather project starts as a flat pattern before it becomes a finished object, and a pattern that's accurate on paper saves a lot of wasted leather. This covers the basics of drafting a simple pattern on paper or cardstock, adding seam allowance so pieces actually line up once stitched, and transferring the shape onto the hide without leaving stray marks.

What you'll need

• Grid paper or plain paper and a pencil
• Cardstock or manila folder stock, for a durable, reusable pattern template
• A ruler, wing dividers (or a compass), and a set square
• Scissors or a craft knife for cutting the paper pattern
• An awl, tracing wheel, or fine marking pen for transferring the outline to leather
• Pattern weights, binder clips, or low-tack tape to hold the pattern in place

Steps

1. Sketch the piece's finished dimensions first — the size you want the object to be once assembled, before any allowance is added.
2. Add seam allowance around any edge that will be stitched or folded. A narrow allowance (as little as 2-3mm for a saddle-stitched edge close to the border) is common in leatherwork, much smaller than fabric sewing allowances, since leather doesn't fray.
3. True up every line and corner with a ruler and set square once the allowance is added, so opposing edges that need to match (like the two sides of a gusset) are actually the same length.
4. Transfer the paper draft to cardstock by tracing or gluing it down, then cut out the cardstock version. A cardstock pattern holds its shape and edges far longer than paper alone if you're going to reuse it.
5. Position the pattern on the leather, checking the grain direction and laying pieces out to use the hide efficiently and avoid flaws or stretchy areas near the belly and edges.
6. Anchor the pattern with weights or clips rather than pins, which leave permanent holes in leather.
7. Trace the outline with an awl (scoring a faint line), a tracing wheel, or a fine marking pen that won't bleed or leave a permanent mark outside your cut line.
8. Mark reference points — hole spacing, fold lines, stitch groove lines — directly from the pattern before removing it, so nothing has to be re-measured freehand later.