Lathe chuck nut mounting tool XL

thingiverse

This is a larger version of https://www.thingiverse.com/thing:3245166. Check there for an explanation of what it's all about. This design is tailored specifically for chucks with M8 nuts that use a 13 mm wrench, and I've also added an extra gear to cover more ground. The distance between the chuck bolt and the inside of the handle facing the chuck has been increased to 64 mm, which should accommodate even the largest chucks. To add some extra durability, I've beefed up the gear thickness to 5.5/5 mm (19/40 teeth). You'll need two 4x12x4 mm ball bearings (604 type) for this design. I printed it in PLA on a Prusa i3 MK3 printer using default settings of 0.15 mm with no supports.