Being a carry permit holder I have a thing for gun holsters, being a big guy, I spend a lot of time baking sure that my holsters are comfortable and work well with the clothing I wear. Something I have noticed with holsters and “gun guys” is that we all end up with a box of old holsters we never use. Looking through my collection I see that the majority of holsters I use on a daily basis are either Kydex or combination’s of both leather and Kydex. That is no surprise when you look at the benefits of Kydex. Its cheap, rugged, non-marring of your gun’s finish, moldable for good retention, smooth for a consistent draw, and does not react to normal temperatures or gun solvents or oils.
Being a DIY enthusiast, it did not take me long to want to try my hand at molding Kydex. For those of you that do not know, Kydex is the trade name for a propriety thermoplastic sheet. It’s rigid and strong, but when heated it becomes pliable. Kydex does not have a memory, so that once it has cooled; it retains the shape it was molded to fit. Kydex is not the only plastic compound that has this property, but what makes Kydex so valuable to DIYers is that unlike other heat formable plastics like PVC, Kydex will not off gas toxic fumes at normal forming temperatures.
Most people use either an oven (full size or toaster depending on the size of Kydex your working with), or a heat gun. It really depends on the thickness of the Kydex your working with, and how big of a piece your molding as to which is a better heat source. Normally I find the oven works best to begin the project, and I use a heat gun to spot heat for adjustments.
Besides a heat source, gloves, and trimming tools, one of the most basic tools to mold Kydex is a press. A Kydex press normally costs from $80 to $180 depending on size, but it is a simple tool that I decided to make one myself.
At its simplest a Kydex press is a rigid board with a thick piece of foam glued to it as a base, with top made the same way. The heated Kydex is wrapped around whatever it will sheathe, and then sandwiched between the two pieces and then clamped or weighted heavily until the plastic cools.
I went a little more complicated, as I put a set of hinges to connect the top and bottom pieces. I connected them this way because I plan on making knife sheaths for the time being until I get enough skill to try more complicated gun holster designs and by being connected, it gives me more leverage for clamping. If I was making a press for larger items like gun holsters, I would not add a hinge, or I would make the hinge adjustable.
Is a general purpose ABS product that has good impact strength, and good hot strength for thermo forming. It is an amorphous thermoplastic material and therefore, processes easier than some other thermoplastic materials.
ABS may be used for interior applications such as appliance parts, tub and shower wall surrounds, and interior automotive trim. With the addition of a weatherable cap it may also be used in many outdoor applications.
Parts made with ABS may be joined with machine screws, bolts, nuts, rivets, and spring steel fasteners. Thread cutting or thread-forming screws is an economical means of securing separate joints. Formed parts may be joined with Methylene Chloride if maximum impact strength is not required. Press and snap techniques and sonic welding may also be used for the bonding of ABS.
End uses of ABS include:
Pickup truck caps
Boat accessories\ automotive trim parts