Step 2: I AM BENDER, PLEASE INSERT GIRDER!
Place your plastic on the heat bender. You will be able to see the plastic distort from the heat build up. This can take anywhere from 10 minutes when your machine is first heating up to 30 seconds when your machine is nice and hot. You should always stay in the room and watch your plastic. If you don't, you could burn it, which will cause it to bubble and turn black, at which point your plastic will be as good as scrap.
You can test your plastic to see if it is malleable. Once it is easy to bend, you have found the right spot. Take it off of the bender and put it into an adjustable angle setter or a pre made mold with the appropriate angle cut into it. For the best results, push your piece into the setter and then clamp it down. You should only have to wait a few minutes until your piece is cool enough to handle!
As a finishing note, you may have noticed that the outside edges ave bowed a bit. feel free to sand them down, they are essentially jump left over squished material.