We will lead the group through the steps to make a very simple, yet effective, vacuforming rig. The chosen design was inspired by this: http://www.fringeneering.com/2012/07/vacuum-forming-on-mega-cheap.html but designed to be super easy to make using off the shelf parts and minimal machining. Instead of using laser cut or 3D printed parts, we will use toilet flange extenders, available at Home Depot to make the base and the clamp that will hold the plastic to be formed (disposable plastic plates work great). If you want to make one, please come with following (again, available at Home Depot):
3 Closet Flange Spacer Rings (Home Depot has "Raise A Ring" from Sioux Chief Mfg., but others might work. Some other types don't have as many holes and might benefit from drilling a few extra.)
4 1/4" x 4" hex bolts [NOTE: I'm going to look for thinner ones as these tend to bind a bit. An alternative to getting thinner bolts would be to drill out the holes]
4 1/4" x 3/4" to 1" machine screws with countersunk head
8 1/4" hex nuts
1 1/4" x 1/2" PVC bushing (should have a flange on one end to serve as a good gluing surface, the other end should roughly fit your vacuum cleaner)
1 4" PVC clean out cover plate (has a small hole in the center that will be drilled out to more or less match the inner diameter of the bushing)
The estimated cost of these parts is about $16.
Other supplies needed include some weather stripping to make a gasket, and some PVC cement (which we'll share a supply of). Also tape or rubber or something else may be helpful to help make a good seal between the vacuum and the PVC bushing that will serve as the vacuum attachment. We'll accept donations to cover shared materials (suggested $1).