Sainsmart Genmitsu 3018 PROVer Y Nut Mounting Blocks

I wasn't particularly happy with the factory anti-backlash nut for the Sainsmart Genmitsu 3018 PROVer, so I designed 3 additional mounting blocks for 3 different styles of nuts. All have minimal tolerance built in for your printer, but I'd recommend running some tests. I have also added in .step files so you can resize as needed in CAD. PETG is going to be your best bet for printing material. All are designed with a 21.5mm offset for the PROVer model, but you can change the mounting flange thickness to suit your printer.

• Y Axis Mount - Standard Nut. Uses a standard brass lead screw nut, and mounts with 4x M3x20 screws/nuts (nuts are held captive inside the mount).  Mounts to the bed with the OEM hardware. Print with supports and the recess facing down (so the unsupported face will be underneath the nut).
• Y Axis Mount - Anti-Backlash Nut. Uses a similar style nut as the previous mount, but has additional ID to fit the anti-backlash version. 2.5mm holes are included in the model, and must be tapped with a M3x0.5mm thread. Mounts the nut with M3x12mm bolts (no nuts required). Use a dab of superglue in the tapped hole if you're concerned about the bolts backing out. Mounts to the bed with OEM hardware. Prints the same as the standard nut mount.
• Y Axis Mount - Delrin Nut. Uses a square-style ‘zero backlash’ nut, commonly made from Delrin or POM. These are a little bit more expensive than the brass nuts, but seem to work much better. Mounts with M5x16mm bolts, and M5 nuts that are captive within the mount. Prints base down, and doesn't require supports if you have sufficient cooling.

I haven't tested these all within the nut hardware (in the post), but all mount to my CNC with zero fitment issues.