In case you are interested in the camcorder underwater housing please have a look. This is the first model and will likely undergo some minor changes, such as getting a handle, adding a camera hood, some rubber for shock damping just in case. I used acrylic to be able to use the infrared remote control. Many people use PVC, I don't think it is any cheaper overall. Total cost: $ 30.
The design is quite simple. Acrylic can be cut with a saw, or better scored, and then be sanded to the final shape. The only thing that you need to make is the disk-shaped end plate - no problem with a little patience.
Buy the parts on Oahu:
ACE hardware for the plug $ 7.85
Min-Plastic ( King/Dillingham ) Acrylic tube - $ 34/ foot
Min-Plastic Special glue and applicator - $ ~ 8
Picture and description:
http://www.oc1design.blogspot.com