Simple 5mm spacer

thingiverse

IMPORTANT NOTE: When using PLA with printing, be sure to increase the size of this spacer to 102% before printing through your slicer program. For ABS, the size should be very close, depending on the steps and tolerance of your printer. Check it with a caliper; 4.9 to 5.1 millimeters is fine. New Prusa kit or Prusa clone kit users often find that when their Z axis raises up 10 millimeters or more, the motors seem to start skipping or one side refuses to rise properly. A common cause of this issue is the threaded rod being pushed into the spring blocks too far. The other possibility is that the two sides are not level with the printer itself. Both the motor shaft and the threaded rod should only go into the spring block at most 6 millimeters. Since most people can do very small prints up to 6-10 millimeters before the Z axis starts binding, this is a simple 5-millimeter spacer with an 8-millimeter hole in the middle. This means it can be used with either 5-millimeter or 8-millimeter shafts. Once printed, turn off power to your printer, loosen one side, and slide this spacer over the motor shaft the height of the spacer (5 millimeters). Using a very fine pointed sharpie marker, mark the other side. Slide the spring block onto it to that point and tighten down. Then do the same with the threaded rod. Go to the other side and repeat until all four are spaced into the spring block the same amount. Make sure to re-level your Z axis with the printer (not the table it sits on), turn the power back on, and adjust the Z stop and bed level height since this likely changed. Print Settings Printer: Prusa clone Rafts: No Supports: No Resolution: any Infill: any Notes: With PLA, I printed at 102% scale with layer height at 0.2 millimeters and it came in at 5.01 millimeters on my caliper. With ABS, I printed at 100% and it came in at 4.98 millimeters (likely due to the nozzle being a little close to the bed for better adhesion).