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  1. X Base 2040 Profiles (x2)
    • X Base 2040 Profiles (x2)

    • Y C-Beam Profiles (x2). Slide them inside the X-Gantry carriages.

  2. Thread the 2 Y Lead Screws through the Nut Blocks on the X-Gantry carriages.
    • Thread the 2 Y Lead Screws through the Nut Blocks on the X-Gantry carriages.

    • Once you're done, you should see about 3cm of lead screw coming out of each end of each C-Beam.

    • Y Lead Screws (x2)

  3. Repeat this step for each of the 4 Y End Plates, installing one on each corner of your base. Do not fully tighten the plates at first. Leave them slightly loose and make sure your frame is perfectly square before tightening everything. Squareness is really important - get a friend's help if you can. Best way to check squareness is to measure the diagonals of the rectangle formed by the 4 profiles. They should have the exact same length.
    • Repeat this step for each of the 4 Y End Plates, installing one on each corner of your base.

    • Do not fully tighten the plates at first. Leave them slightly loose and make sure your frame is perfectly square before tightening everything. Squareness is really important - get a friend's help if you can. Best way to check squareness is to measure the diagonals of the rectangle formed by the 4 profiles. They should have the exact same length.

    • Lock Collar 8mm. Set it in position, but don't tighten for now.

    • Precision Shim 12x8x1mm

    • 688ZZ Ball Bearing

    • Y End Plate

    • Low Profile Screw M5x12mm

    • T-Nut M5

  4. Thrust Bearing Tensioner Nut. For now, screw it in just a tiny bit, so it holds its position. Repeat this step for the front Y End Plates on both sides. Play close attention to the image to understand exactly where they are (position is not reversible)
    • Thrust Bearing

    • Tensioner Nut. For now, screw it in just a tiny bit, so it holds its position.

    • Repeat this step for the front Y End Plates on both sides. Play close attention to the image to understand exactly where they are (position is not reversible)

  5. Aluminium Spacer 40mm Aluminium Spacer 6mm Thrust Bearing
    • Aluminium Spacer 40mm

    • Aluminium Spacer 6mm

    • Thrust Bearing

    • Lock Collar 8mm. Set in position, don't tighten yet.

    • Flexible Coupling - 1/4" x 8mm. Set in position, don't tighten yet.

    • Nema 23 Motor

    • Low Profile Screw M5x55mm

    • Repeat this step for both Y Motors. Then, tension your lead screws, just like you did on the X Axis.

Rat Rig

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