Ender 3 & 3 Pro - X Belt Tensioner (Modular - no supports needed)

thingiverse

There are couple of Ender 3 and Ender 3 Pro X- belt tensioners, but most of them are made out of 1-2 or bigger parts and if something breaks, then the whole thing has to be printed again -> waste of time & filament and creates a lot of unnecessary plastic waste. Designed something modular, that can be easily printed and replaced. The bolts and screws can be found in pretty much any hardware store and does not require bolts and nuts that has to be specially ordered. With the default print orientation, no supports are needed Needed Parts: Original screws, T-slot nuts, bearings 2 x M5 bolt - original tensioner bolts on beam 2x M5 T-slot nuts - original tensioner bolts on beam 1 x M4 16mm - Original bolt that tightens wheels mount to the beam 2 x original bearings Additional: Bolts: 1 x M4 19-20 mm bolt - bearing adaptor support 1 x M4 16mm bolt - belt tensioning bolt 4 x M3 5-8mm bolt- tighten the Idler side parts together 4 x M3 8-12mm bolt - tighten the outer side parts together Nuts: 1 x M4 nut - for bearing support bolt 1 x M4 nut - for tightening bolt The part is made out of 7 pieces: Idler (inner part) 1 x Bearings adaptor to the M4 bolt that fits between the idler sides 2 x idler sides 1 x Idler Mid - sides are attached to it Outer part - mount to beam and Wheels support mount 2 x sides 1 x Mid - sides are attached to it The part has been tested on an standard Ender 3 Pro, but should fit on Ender 3 as well.