Hey BobCat
BobCat wrote:I see your vacuum former but am not sure how it works. Most of the Internet how-to videos show a clamshell press made of plywood, hinges, foam, and clamps. It looks very simple to make, I'm hazy on the vacuum former. What is your opinion of the proper choice for a first-time holster maker?
The clamshell type press is a true and tried method for forming Kydex/ABS and would be considerably cheaper and easier to make than the vacuum membrane press. But, having used both, I think the vacuum membrane press gets better results on the initial pressing and requires less heat gun tweaking than the clamshell. My answer is start with a clamshell!
BobCat wrote:If one wants a one-side plastic shell to go on a leather backer (like the one you show for your SA EMP 9mm), is there foam under the gun or does it lie flat on the plywood, so the plastic is full-depth?
No foam under the gun, let it lie flat on the plywood.
Here's how I use the modified vacuum former, which I'm now using as a vacuum membrane press.
Cut the Kydex/ABS to fit the gun.
Affix a dowel to the top of the gun to create a front site channel.
Heat the Kydex/ABS.
Here's the part I was not able to photograph during the process. I first positioned the (unloaded) gun on the vacuum table while waiting for the ABS to heat. When ready and with gloved hands, I removed the ABS from the oven and placed over the EMP and formed it loosely with my fingers. I then grabbed the frame with the membrane and lowered that onto the gun and ABS. Turn on the vacuum and the membrane sucks the heated ABS tightly around the gun!
Hope that helps!