Inside of a Tamiya rattle can(photo)

[Pete J.]

I figured out your saddle valve device Pete. I machined the main body from a block of Teflon. Then bored a hole in the middle the size of a spray can , then split it in half and drilled and taped two holes for the allen head screws and the a third hole for the thumb screw to pierce the can. Works like a charm. 

Douglas,

  Great, glad you were able to do this.  I have had a number of folks ask me to make them, but due the the inherent dangers dealing with highly flammable fluids and the fear that no matter how great the instructions are that I provide, someone will find a unique method to injuring themselves,I have refused.

 I like the idea of Teflon.  I used aluminum.  If I do another one, I may use teflon or some other plastic.