Be sure to check all couplers between the motors and the drive screws. The setscrews can become loose. Plus, if the setscrew is not tightened against the flats of the motors and the drive screws there can be intermittent slipping. So, even if a setscrew appears to be tight, it may only be tightened against the cylindrical part of the shaft. This would allow the shaft to slip while being exposed to cutting pressures.
Bob
Thank you Bob - you solved a problem I have been having. The last couple of projects I've done have resulted in poorly cut circles. I checked the set screws and sure enough one was loose. Tightened it up and problem solved!
Thank you for your reply. This solution is the result of many others who have posted solutions to similar problems.
Your post will help support, and solve future challenges.
Bob
"Focus"
Antonie Van Leeuwenhoek (Developer of the microscope.)
