Warping usually happens when a fused bead project gets too much heat in one area or cools unevenly. A gentle, even process gives you a flatter and stronger result.
Protect the beads first
Always place ironing paper between the iron and the beads. The paper prevents direct contact and lets the heat move across the surface more smoothly. Keep the paper flat so it does not drag beads out of position.
Use short passes
Set the iron to a medium heat with no steam. Move it in slow circles or side-to-side passes rather than holding it in one spot. Pause and check the bead edges often. You are looking for joined edges, not a completely melted surface.
Let the project cool under weight
Once one side has fused, leave the paper in place and add a flat book or board on top while the design cools. This is the simplest defense against curling. Do not bend or pick up the piece while it is still warm.
Fuse the back only if needed
For keychains, coasters, and pieces that will be handled often, a light pass on the back can add strength. Let the first side cool fully before turning it over.
Every iron behaves a little differently, so make a small test piece before an important design. More beginner techniques are collected in our Beginner Guides.
Once your technique feels comfortable, find more project inspiration and supplies at Fusedots.
For another project to practice your ironing technique, discover colorful ideas at Fusedots.