I have a Medel90 Dibond printer from Nophead and have printed 2-3 kg of plastic. I have noticed a progressively louder scratchy/crunchy/grindy noise when the machine is running. It appears to occur primarily when the bed moves in the +Y direction (toward the back). Is it likely that one or more of the Y axis bearings is bad? I have applied light machine oil to the guide rods and Z axis screws occasionally.
If it is likely the bearings please advise regarding a source for replacement linear bearings and suggestions for better maintenance. Perhaps I should be using grease rather than a light oil.
Thanks