@Rick and @jonatpridesleap I’ll be happy to share whatever knowledge and experience I have had with my printers. Just send me a message and I’ll do my best to answer what I can.
As far as filaments, I used this clamp by @ShadyG for the router. That I printed in PETG. I had used other pieces that I had found on Thingiverse, as well as parts that are identified in the wiki for the Me-Z (I need to see if I can find that link) that I had printed in PLA, though I had some failures with (if you read the entire thread that I linked for the clamp, you can see my posts and the failures I had). The first time I had a failure, I did use the wrong size threaded inserts that helped to cause bulging and separation along the layer lines. The next failure, I had the right inserts, but I believe I over torqued them, and again, had separation at the layer lines. So key here is to have tension parallel to the layer lines, not perpendicular (there could have been other issues like the number of walls/shells, and other printing techniques I had not learned yet). Most here will tell you that for strength, you need to print in ABS, but that can be tricky as ABS is very temperature sensitive.
As far as printing in general, PLA is the easiest to print with (and is usually what most people use. There is a lot of info out on the inter-webs that will compare and contrast everything and what is best for what. But for most of them, after printing, they can be sensitive to heat exposure unless you do some sort of post processing with them (resin coating, painting, etc.). The clamp I did has been holding up pretty good, so I can’t complain there. Here is a pic of something else that I have printed and finished in PLA:
Again, hit me up if you have any further questions.