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uze6666

Prints slanted on the X axis: how to fix?

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Hi,

Lately I have started to notice that my prints are slightly slanted on the X axis. It's annoying because corners are not 90 degrees anymore and parts won't fit together. The bigger the part, the bigger the difference. I homed the print head and took my caliper to measure the distance between the Y axis rods. Sure enough, I measured about 1.6 millimeters between the spots on the picture below.

How can I correct this? Is there a procedure somewhere? I can't seem to find an assembly manual for the UM2. :???:

Thanks in advance for any help.

um2prob1.jpg

 

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You have to loosen I believe 2 of the long belt pulleys. For example the top 2 in your photo (the rear two for the rear X axis belt - then slide the top and bottom blocks all the way to the left, verify the 2 distances are now equal and retighten the long belt pulley set screws. Very very tight. Repeat for Y axis if not already perfect.

 

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Fixed! Basically, as gr5 proposed I just had to unscrew the two pulley that drives the Y axis (the ones on the console side) and displace the belt a little bit. It took a few try to get it right but I was able to adjust the machine and it prints fair and square as before!

Thanks for the help! :D

 

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