@Norm Charbonneau how much infill did you use with the cam you printed? I'm going to try making some with PLA and I was planning on trying 50% infill when printing.
I ended up getting a couple of the resin cams from Sid and used one in my Lionel JLC Rio Grande Challenger to Union Pacific Challenger project. They work very well, but I'd like to be able to make more on an as needed basis, and I have access to a PLA 3D printer.