Neptune 4 Pro X Gantry Belt Attachment Piece
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3D printable replacement for the factory X gantry belt attachment piece. Compatible with factory belt length.
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- Creative Commons — Public Domain
I doubt anyone else will need this but there's a chance.
This is the part of the stock X gantry that the belt attaches to. I received a printer in pieces that was missing this part, so I created it roughly following the original shape.
The original part is about 1.8mm thick but there are no practical restrictions for making this thicker. I opted to make this 4mm thick and moved the belt slots out about 1.8mm from the factory bracket to compensate. This means that a factory belt should work with this bracket.
If using this part, don't print it out of a material that is prone to fatigue such as PLA. My test print is ABS. With my test print, tension from the belt isn't all that high and is not causing any noticeable stretching. I feel fatigue wear may come from fast movements changing directions quickly rather than static tension. I may revisit this part and make it a little bit stronger and less likely to bend from fatigue if it turns out to be a problem.
You will need 2x M2.5 8mm long screws to attach this to the X gantry plate.
Update 20241116: It's been a few days. No bending or fatigue at all on the original REV1 part printed in ABS. Working great for me. Still, I uploaded a REV2 part that may be stronger and less likely to fatigue.