PVC pipe is a cheap and super simple way to cast Alumilite. In this video, I cover some of the basics on how to use PVC and what you need to know when casting Alumilite in PVC.
Silicone plugs work very well and are much quicker than tape. It’s an added expense, but I feel it’s totally worth the investment. They’re reusable, and take 2 seconds to put in and take out. Here’s a source I found on eBay for them: http://goo.gl/qBxuY8