Build Instructions

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• 1

  Fabrication

  - 3d Print the Motor bracket, Linear stage brackets, Carriage top and Bottom, and Line-holding/guide pieces.  NOTE: Use opaque, dark material for this (i.e. black PLA, and NOT the semi-clear material I have here).  The flags for the limit switch will require tape if you don't use an opaque material.
  

  - Grind or Cut off a piece of the acme threaded rod/lead screw to be about 105mm long.

  - Using a laser cutter, cut out the dxf pattern on 1/4" (or thicker) acrylic plate.  
  

  Note: You can also print this out onto several sheets of 8 1/2 x 11paper, arrange and tape to the acrylic, and then hand-drill, but this might be time consuming.  The large holes are meant for a 1/4-20 tap, and the small holes are meant for an M2.5 Thru hole. (Though they could be used for an M2.5 tap, depending on what type of hex standoff you have).  If drilling by hand, verify that the drill bits used are the correct size.

• 2

  Placing the Heated Inserts

  Using a soldering iron, press the M3 heated inserts into the top of the carriage, and into the Linear Stage Bracket (where the optical sensor will be mounted)

• 3

  Assemble Carriage

  - Slide 2 LM8UU linear bearings onto the 8mmx150mm rods.

  - Partially thread the brass nut onto the lead screw

  - Press all three into the carriage bottom (this was a tight fit for me w/ my printer - you may need to tweak the design a bit)

  - Attach the carriage top using M3 screws w/ Hex Nuts.

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