Josh Ward

The RatRig kit does not come with enough T-nuts and screws in order to fully populate the electronics board designed for the V-Core 3.1. You can get away with using 2-3 screws per edge and only a few for the center spine, in order to have enough to complete the printer build.

I held the mount with the fin facing downward, and jiggled the nylock nut until it was in the middle, then stabbed it with a longer M3 screw and pulled it into place.

The wires leaving the hot end should be oriented to the back right on these pictures, out the same side as the tie wrap point on the mount assembly.

The groovemount adapter is the top piece held on by two screws. Remove those with an H1.5 allen key to remove the groovemount adapter.

To route around the front idlers, it may be helpful to insert the other end of the belt through from the exit, with teeth facing out, then meshing that belt and the one you want to feed, and pulling back out.

200x200: 300mm Linear Rail, 322mm 2020 Extrusion, 12x M3x8 Screw & 2020 T-Nuts

300x300: 400mm Linear Rail, 422mm 2020 Extrusion, 16x M3x8 Screw & 2020 T-Nuts

400x400: 500mm Linear Rail, 522mm 2020 Extrusion, 20x M3x8 Screw & 2020 T-Nuts

500x500: 600mm Linear Rail, 622mm 2020 Extrusion, 24x M3x8 Screw & 2020 T-Nuts

It may be easier to line up the 3030 T-Nut if you lay the printer on the front face.

If flipping upside down, tape off the tops of the already-installed rails to keep the Z carriages on.

I left the orange caps on until the next step, when they’re just about to be installed (to minimize risk of the carriages from sliding off)

Should be 84x 3030 Drop-in T-Nut - M3

The alignment tools are printed in black filament, as of 7/1/2022 (not green as pictured)