We've got a prepared length of tube, so now let's have a look at how to do the actual bends. This involves heating the tubing until it's reached its glass-transition temperature. First up, though, is ...

You can do a lot with acrylic and few tools. If you’re just starting out we’d suggest taking a look at [Michael Colombo’s] guide to heating, bending, and gluing to create custom acrylic enclosures.