Making your own knobs

[Anmgq at cs.com]

Before I was an aircraft mechanic, I was a special mechanical effects and 
prop dude in the film biz. We used a product called "Castmaster". It was a 
two part composit sorta plastic stuff. You mixed the two parts (both had the 
consistancy of cream) and the stuff kicked off in about 1-2 minutes. The 
castings could be pulled from the mold in about ten minutes. You have to use 
a silicone type mold, but the detail properties of the Castmaster and the 
silicone were fantastic. The stuff can also be tinted many different colors.
The finished piece could be cut, sanded, milled, drilled, machined, and I 
have tapped drilled holes in the stuff with pretty good results (if the 
material is thick enough).
There are several plastics houses around the country where you can get this 
stuff. It might go by a different name now. Burman Industries in Van Nuys 
California (make-up and SFX supply house carries both items. 
In a pinch I have used Bondo mixed with casting resin. When mixed with each 
other and the proper amounts of hardners, the results are almost as good as 
the plastic.
Just thoought I'd give my two cents.

John
Paradise Ca