M4 bolt insert for ender 3 neo x axis belt tnesioner

I printed this x belt tensioner for my Ender 3 Neo and found out the original screw is different. Mine is shorter. I don't have M8 bolts at home and I don't want to waste the print. So I designed these inserts to use 16mm M4 bolt instead.

I printed them in ABS. You might need tweak the dimension a little to get ideal fit. The puller inserts should be press fit and the M4 bolt bolt hole should be slightly larger than M4 bolt so bolts can pass through freely.

I designed the model in onshape. You can edit it as you see fit：link

I printed this x belt tensioner for my Ender 3 Neo and found out the original screw is different. Mine is shorter. I don't have M8 bolts at home and I don't want to waste the print. So I designed these inserts to use 16mm M4 bolt instead.