Qubd twoup z wobble fix, z rod stabilizer

thingiverse

This is a component I designed to reduce the z wobble I observe when watching the z screw turn. It made it possible to see the screw moving left and right as it spun, which was negatively affecting my prints. Created with a brass flange bearing purchased from Home Depot that has an inside diameter matching the 2 up z-screw. These are self-lubricating and cost approximately $3-$4. www.homedepot.com/p/Crown-Bolt-3/8-in-x-5/8-in-x-1-in-Bronze-Flange-Bearing-57738/203537359. The bearing holder is designed to mount onto the base, utilizing 3 m3 16mm screws that attach onto the z motor through the base. This will secure the brass bearing even if your motor axle isn't quite aligned with the z screw. This entire assembly is used in conjunction with the hirth coupler (www.thingiverse.com/thing:397553), and a piece of thick foam pad was employed to provide some flexibility. This combination functions well to alleviate my z wobble. Print Settings Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: .3 Infill: 50% Notes: Supports are essential. I would not go below 50% infill as structural integrity is crucial. Mine was printed at 50% and it's quite difficult to break with bare hands. Additional upgrades made to my printer include the gantry pulley mod, and the Home Depot bearing holder attached to the top bar/handle of the z rod. Post-Printing You can see past the screw a bit of the support material that I couldn't remove, but it doesn't impact the structure or get in the way.