Thank you for the quick response. I did some testing today and feel that I was able to eliminate all of your suggestions except for mechanical issues.
Before I ever turned the machine on I read those same documents on origins and probing and used them to initially set up the program. I went back and verified everything just to be sure and all was set as it should be.
The retract height is set to 0.394” (10mm).
Electrically everything looks great.
I even opened the g-code in Notepad and Identified the point where it dove and did not see any program reason why it should have done it.
I really believe that my issue is mechanical. It seems to me that while the router is running in the perimeter router it is chittering and chattering and doesn’t have a consistent routing sound, almost as if the router is deflecting in the pocket and bouncing around off of the walls. It seems to dive exclusively right after rounding a corner. As it comes out of the corner, it starts to vibrate more and more until it is really bouncing around in the routed line and then starts to pull itself down. I checked and re-tightened the eccentrics and the z-belt (slightly more than the instructions call out) just to make sure there was no play coming from the z-axis assembly. I also double checked the stick out on the #201 and pushed it all the way up, then pulled it back down about 1/4” to make sure the collet could tighten.
The router was trammed with a dial indicator and is within 0.002”.
Am I expecting too much to be able to rout 1/2” polycarbonate with a #201 using CC standard feeds and speeds? It seems like the z-axis isn’t up to the task or the router has bad bearings or bad run-out from the factory. I ran out of time today, but tomorrow I will check the bearings and runout with an indicator.
Any other ideas would be appreciated I really want to like this machine, but I have only had it a few weeks and have not been having much luck. I am new to wood routing, but not to CNC. I built my own 5’x10’ CNC plasma table and have been running that for a few years.