REPLICATOR CTC DUAL SQUARE UP your X-axis after Y axis upgrade

thingiverse

It's a good idea to print these before upgrading your printer! One of the first commonly upgraded parts on Replicator 1 clones is the Y-axis bearing block, which involves removing one side of the printer and a couple of pulley wheels. Unfortunately, this upgrade leaves your printer unusable because the X-axis won't be square and will need recalibration. If you print, you may notice straight lines are angled and circles look oval. Print these before upgrading or else you'll have to make something similar by hand, although it's easy enough to do that way: simply cut a UPVC pipe in half then sand it down to match the fit of the pair exactly, measuring with vernier callipers. Bear in mind you probably will need to sand and match the 3D printed ones too. To use these, all you need to do is place them on the bars (see photos and illustration) then move the head flush onto these two spacers so that both sides are touching and tighten up your pulleys.