65mm Spindle Mount and Dust Shoe for CNC 3018

This is a combination spindle mount and dust shoe / dust boot for a Sainsmart 3018 CNC for a 65mm spindle (e.g., Makita RT0701C). The vacuum intake pipe is for a 1" hose. It's intended to be somewhat modular. I've included the original Fusion 360 design in case you want to tweak it for your setup.

I reused the backlash nut and spring from the original spindle holder but bought new bearings. I also didn't try to pull the lead screw nut out of the original spindle holder - I bought a new one.

At a minimum you will need:

• 2 - M4x20mm screws and nuts. [Amazon] This is to tighten the holder around the spindle.
• T8 lead screw nut. [Amazon] I have the stock lead screw which has a 2mm pitch and 2 starts. If you changed your lead screw, pick the appropriate nut.
• 4 - LM8SUU linear bearings. [Amazon] These are the same bearings as used in the stock spindle mount. You can reuse the ones from the stock spindle mount if you want.
• 4 - 12mm x 3mm round magnets. [Amazon]
• Epoxy or other adhesive to glue the magnets to the top and bottom halves. [Amazon]

If you want the brush on it, you'll need:

• Flexible brush, about 60-70mm tall, about 40cm long. [Amazon]
• 5/8" hook and loop ("Velcro") fastener, about 40cm. [Amazon]
• Fabric or craft glue (to attach the hook and loop to the brush) [Amazon]

If you want to screw the limit switches to the spindle holder for the Z axis:

• 4 - M2x6x3.5mm threaded inserts. [Amazon]
• 4 - M2x12mm screws. [Amazon]

There's a picture of the limit switches I use down below in the post-printing instructions. You can see them here on Amazon, too.