The short version: cover beads with ironing paper, set the iron to medium-high with no steam, press in slow circles for 10 to 15 seconds, let it cool, flip, and iron the back for 10 seconds. Then flatten under a heavy book. Both sides means a stronger, straighter piece.
Ironing is the step that separates crafters who get flat, strong pieces from those who get warped, patchy ones. The technique is simple, but the details matter. Here is the full method.
Step 1: Set up
Lay the filled pegboard on a heat-safe flat surface. Cover it completely with ironing paper, extending past the edges. Set your iron to medium-high, about 150 degrees if it has a dial, with the steam off and no water in the tank.
Step 2: Iron the front
Press the iron on the paper and move it in slow circles for 10 to 15 seconds. You should feel the beads soften under the paper. Lift and check through the paper: if the surface looks fused and the holes are still visible, stop. Do not press hard; the weight of the iron is enough.
Step 3: Flip and repeat
Wait one minute, peel the paper slowly, and flip the piece. Re-cover with fresh paper and iron the back for 8 to 12 seconds. This second pass is what keeps the piece flat and seals weak spots. Remove the paper and flatten the warm piece under a heavy book or cutting board for five minutes. Our blog guide covers troubleshooting and timing tables, and if you are making a project from scratch, start with a pattern from our free library.