| 1. Start with a sheet of PCL plastic. | |
| 2. Using a straightedge and utility knife, score a line where the crease will be. The desired cut depth depends in several factors, and should be just deep enough that the bending described in step 3 can begin. | |
| 3. Use a heat gun to soften the back side. Bend the sheet enough that a minimal amount of hot air can get into the crack. If it refuses to bend at all, cut a little deeper. | |
| 4. Once the sheet begins to bend, you should be able to get a lot more heat into the bottom of the crack, after which the rest of the bending happens easily. | |
| 5. Bend until the desired angle is reached. | |
| 6. Now it's just a matter of shaping the corner as desired. The easiest thing to do is just smooth down the bumps, but a sharp corner is possible if extra material is added. |