Z-Axis Brace v2 - Precise Adjustment

thingiverse

This is version 2 of the Z-Axis Brace used to stabilize the Z-wobble apparent in many printers. This one was designed for the Hictop Prusa i3 but should work on all or most i3 style printers with an 8mm thread and rod. The original design intended to have M8 nuts above and below the bearing, but this seemed unnecessary and took up too much space. It is better to have the bearing closer to the coupler, so the overall height has been lowered. This is the precise adjustment version so you can compensate for motor mounts that are not perfectly perpendicular to the build plate. Note: Funnily enough, I designed this part for M2 Nuts and Bolts but then realized I only had 2 of them on stock which is why there are only two in the picture. Print Settings: Printer Brand: RepRap Printer: Hictop Prusa i3 Aluminium Rafts: No Supports: No Resolution: 0.2 Infill: 50% Notes: Mirror the model to make the brace for the other side. Post-Printing Additional Pieces Needed: Two standard bearings (one for each z-axis) Three M2 Bolts with a minimum length of about 10-15mm Three M3 Nuts Installation: 1. Insert the M2 bolts into the brace. 2. Unscrew the stepper motors. 3. Put the bearing on the threaded rod, but tape it up to the x-carriage so that it is out of the way. (Optional: for extra stability, add an M8 Nyloc Nut above the bearing to keep pressure on the bearing and avoid the threaded rod grabbing the bearing.) 4. Screw the stepper motors and brace on to the printer. 5. Ensure everything is aligned and insert the threaded rods back into coupler as accurately as possible and secure them through the holes on the side of the brace. Note: It is important to get the z-wobble as low as possible before fixing the bearing to the brace to ensure optimal results. 6. Insert the M2 Bolts into the brace and observe where the center of rotation is and slowly and incrementally tighten the bolts. (Optional: If you inserted an M8 Nyloc Nut earlier, lower it onto the bearing.) 7. You are done installing the brace, now continue to level the X-Axis as per usual.