I got the Sig Sauer P938 and have absolutely loved it. However, I did not like the thick rubber Hogue grips that came with it. I modeled these grips and have been using them instead. They aren't perfect and some of the angles are slightly off, but I have really loved using these. I have really liked these grips. The 3D printed plastic has held up really well so far and they provide great grip. I haven't had any slipping issues. I have been using these for a few months now.
If I remember correctly, I had to shave down the area by the slide release, but that was it. I also made some grips that say "In the defense of Innocents, Cowardice is the only sin." I haven't used them and haven't loved them, but have included them in case anyone else like them. Feel free to tweak and modify these files. If you print these, I'd appreciate it if you filled out an "I Made One" so I can see it! Thanks and Enjoy!
You may need to grind, file, or shave down one or two spots just slightly to make the grips interact with the gun's mechanisms correctly.