If you are running with belts, can you see if there is a tighter spot at one degree or another in regards to your drive gear? It almost seems like it is rhythmic, maybe the bore is off center causing the belt to get tighter and looser at (almost) consistent intervals. Maybe check to see if anything is stuck in a timing groove (like a drill curly Q or a set screw not set deep enough if it is hubless). Other than that the cuts look good and nice tolerance! The jaggies are bothersome I see. with pitched rails you have to watch for tap holes exiting through the spur side, they can leave a nice bump to wear down if you don't file it or de-burr it somehow. Those are less rhythmic but will appear at the same spot on the table where a drive or pinion will show up anywhere on the table with a regular beat. Try cutting straight cuts about a foot apart with both X and Y and see if it is more pronounced in a certain spot. At least you can narrow down a mechanical issue somewhat.
Good luck!
WSS |