CZ P-09 / P-7 Thumb safety extender, gas pedal, thumb rest. Sharkfin V4

DISCLAIMER!
This is a firearm part, if you want to make it you assume all risk and liability.

This is just a safety extender, it does not break the law in any way.

while close, this is not a friction fit ONLY, this should be secured with epoxy or other adhesive.
Attaching this to your safety using the means I have, means you will most likely damage the coating/covering of the safety. It should still be functional if you decide to remove this in the future, but it may not be pretty.

all testing and work was done on the P-09 platform, I believe that the P-07 series uses the identical part, but I have never personally tested this.

This all started because I wanted to use my CZ P-09 in USPSA competition, for that, it's best to have a Single action (Safety) to avoid starting the hammer down.

There was a problem, the Safety on the P-09 at least, and maybe the P-10 as well, suck horribly. It's almost impossible to use the safety without the offhand, or breaking grip.

Long story short, the safety design is convoluted, and I couldn't find an aftermarket one, I couldn't have one modified or made. Most shops just straight-up refused. One gunsmith took the gun for almost a month and "never got around to it".

It was in this moment of darkness that I reached out to a friend who I knew was into CAD and 3D printing, within a week he had a design, and we were off. He did the design and printing, I did the fun job of testing.

We went through a lot of testing, and a lot of trial and error, but have now arrived at what I feel good using. the V4

We were originally going to print them ourselves and sell them to maintain quality etc, but with some things in life, neither my friend nor I have the time to make physicals now. We decided to sell the STL here to spread the design, but also recoup our research and development costs.

these were all created with a Bamboo X1, with PLA-CF filament.
settings for that specific printer etc will be updated at a later date.

My best advice is to do your own testing, try different supports, different infills, etc. find what works for your setup.

installing it, I roughed up the surface of the safety and glued them together with epoxy.

I did create a little YouTube vid on how I installed it on my firearm.

https://www.youtube.com/watch?v=Y-uK2tAm0SU

These were the Slicer settings we used.

Wall thickness: 6
Topshell layers: 3
topshell thickness: .6mm
Pattern: Monotonic line
Bottom surface pattern: same as top.
bottom shell layers: 3
internal solid infill: rect liner
infill density at 25%, Grid pattern.

infill wall/overhang: 15%
infill direction is at a 45-degree angle.

You will have to try different things for your filament and printer, what I can say is that print orientation does matter. We got better results when printing it on its side (Fin up), however, you MIGHT get better strength results if printed on its side. We did not find that to be the case, "you do you boo-boo"