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Thanks everyone. These are all interesting suggestions. Right now it's frigidly cold and I can't heat up my shop enough to feel comfortable running the router. It's well below freezing and it's probably going to stay this way for a while. Sorry, it means I have to put this on hold until things...

I ran some more trials today and yesterday, but I haven't seen much change in the results. All point-to-point operations are 1:1 or near enough that I could leave them as they are. The circular arcs continue to be egg-shaped, however. I have changed the size of the circles, partly because it...

Today and yesterday I had some time to work on the CNC. The main improvements are three-fold: - relubrication of the X-axis linear guides - cleaning the ways for the linear guides and the lead screw - pumping fresh grease through the X-axis ball-nut Each of these tasks weren't quite so simple...

When in doubt, see what the experts say. This is a good time to consult the big-name brand CNC builders because they publish a lot of good info about troubleshooting and maintenance. Here's a valuable hint from the HAAS website: Um, yeah, that's exactly what my machine's been doing for weeks...

Oh that's interesting. I have been cautious about adjusting motor parameters, since they were set by someone who obviously knows more than me, and frankly the CNC works already. The mismatched master/slave accel's I found the other day has made me question that assumption. Can you think of...

Thank you for checking! Here's a summary of my measurements. The trough side has ID and OD measurements written. Nominal ID should be 4.375" and nominal OD should be 5.000", so way off. The other side has the X and Y and diagonal measurements across the holes. These are measured with caliper...

Speaking of grease... The grease used in these bearings I would describe as "stringy", not "buttery", so in other words less viscous than the grease I normally have on hand. Ya know.... for my tractor and stuff... Does EP2 lithium complex make sense? ...and not needing the detergents or...

I didn't get to spend much time with it today. I'm concerned about operating it in a cool garage right now (hovering just above freezing). I've been using it nonetheless but normal projects (cutting wood) haven't been very demanding, either. This winter has been ridiculously warm...

It's using G1 only for the lead-in ramp, then switching to G3 curves. I have given it 2.0 in/min to ramp, then switch to 8.0 inch/min while cutting the curved profile. This is the first cut into the part. The pattern repeats with a smaller circular pass to cut the other edge of the profile...

Oh, of course, and: Happy New year folks! Looking forward to a healthy and creative one myself. (well, healthiER at least!)