Y axis variable resistance
I am assembling a MK4S kit. I have the Y axis together and I noticed something unusual. When you move the bed back and forth you get varying resistance. sometimes it will move easier and sometimes harder. In the hard spots it is resistant enough that you can get it to stay in place when the printer is rotated 90 degrees. I do have kit experience. I have assembled a MK4S before. I checked that printer and the Y axis moves smoothly and evenly along it's length.
I checked everything I can think of. The motor shaft is straight and rotating smoothly. The pulley rotates cleanly. The belt is straight. There are no obstructions in the Y axis path. Has anyone ever had a similar experience? Is it safe to try running it this way? I'm not sure what to do on this one and would appreciate anyone's insights.
Disconnect the Y belt. Is it smooth now?
Cheerio,
RE: Y axis variable resistance
yes, it is very smooth with the belt disconnected.