Endorphin Mod Eva 3.0 Front Belt Heat Inserts

This is a remix of the Original Eva 3.0 front end (https://main.eva-3d.page/stls/heat_insert/core/cartesian/front_universal_fi.stl). It is intended to be used on an Endorphin Mod Ender 5/5P with a single 6mm X-Y belt. The existing Endorphin Mod utilization of the Eva 3.0 printhead (https://endorphin3d.com/docs/stages/stage-3) requires you to attach the belt at the back of the X axis gantry. This results in screwed up kinematics in Klipper (and I believe Marlin), which require you to edit the Python kinematic file. Otherwise, the printer will home to the Y-axis just fine, but the X axis movement will be backwards. If you try reversing a pin direction to fix this, it screws it up even more. The simplest fix is to attach the Eva printhead to the front of the X axis gantry, not the back, so you can use the standard hybrid_corexy.py kinematics file. That's what this solution does.

I suppose you could use this on an unmodified Ender 5/5P, assuming you had mounted a linear rail of the right size on the X gantry.

This solution also allows you to use a thinner backplate (https://www.printables.com/model/430281-eva-3-beltless-backplate-for-dual-5015) if you are mounting the dual 5015 part cooling fans, which can help buyback some of the lost Y-axis direction you get with the Eva 3.0 printhead on Endorphin Mod.

I would recommend printing in PETG at least if not ASA or ABS, and use 100% infill to support the heat inserts.