MPCNC z axis drag chain mount

This is a mount for this the MPCNC z axis stepper that does not mount to the top of the Z axis assembly. Mounting the drag chain to the top of the z axis rails puts a lot of leverage on the z axis. This mounts directly to the XY part which is a lot more forgiving. It requires drilling 2 holes in the XY part and through-bolting. It is a little fidgety to put together, but you can get the nuts on there with a dowel and some superglue. (or just use a couple properly sized wood screws. It would still be plenty strong enough). You will also have to drill 2 holes to mount the drag chain to the top depending on what size drag chain you use. I used this:

https://www.amazon.com/gp/product/B071X4QD3Q/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

the mounts for the aluminum extrusion are here:

https://www.thingiverse.com/thing:1855944

Print on its back with support

I printed at 60% infill and it is more than strong enough