This part allows the use of the Z axis screw supports that come with the Creality Ender 3 dual Z screw kit on your Elegoo Neptune 3 or similar, with smooth faced extrusions.
Link to kit - https://amzn.to/3Cd28hc
You need 400mm screws for the supports to work properly - https://amzn.to/3BR9zte
You'll also need m5x45mm socket head screws to affix the top rail to the Z rails - https://amzn.to/3dYd2xU
Standard M3 and M4 T nuts will work fine. This is a replica of the 2020 extrusion profile.
Please note: Z axis travel will be limited to 270mm instead of 280 with the bearing supports If you need the full Z height, you can remove them with no issues. I just put them on because I had them :)
Don't forget the PSU adapter! Elegoo Neptune 3 Creality PSU bracket adapter by Feral Engineer | Download free STL model | Printables.com
I designed these parts myself, so please, tip your maker :)
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