Printrbot Smalls 8mm Lead Screw Upgrade

thingiverse

I recently acquired the included Z lead screw with my smalls kit, but unfortunately, it broke. Realizing I needed a replacement, I decided to upgrade to an 8mm 4-start lead screw instead. However, I soon discovered that the included Z nut would not work with this new component. After conducting a search, I found a part on Thingiverse that had potential for modification to fit my smalls setup. Notably, you will require about 2 mm of clearance between the top of the printed part and the Z nut in order for the 8mm lead screw to function properly. To achieve this, I employed two M4 nuts as spacers. Update: Following my initial submission, I added a Z stabilizer that rests on top and incorporates a 608 bearing. This component is still in its infancy stage, awaiting further refinement to ultimately serve as a handle and secure itself into the Z frame.