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  1. The first step is to align your belts. Adjust the steppers so there's some tension, it doesn't take much, just enough that the belts are straight.
    • The first step is to align your belts. Adjust the steppers so there's some tension, it doesn't take much, just enough that the belts are straight.

    • Loosen the bolts holding each stepper and idler mount, and move them on the frame until the belts form 90 degree angles to each other.

  2. Earlier in the process you should have made sure your belts are equal lengths, if you did, that will make getting proper tension easier.
    • Earlier in the process you should have made sure your belts are equal lengths, if you did, that will make getting proper tension easier.

    • Each X Carriage has two bolts retaining the Y rail in place. Loosen those bolts in both carriages just a little before proceeding. (They should still keep the rail in position, but should not be tight)

    • Pull on the Front stepper in the mounts to lightly tension the front belt. You don't need too much tension.

    • Pull the rear stepper back in the mount until the measurements marked in red on the image are equal. (Measure from the right side of the Y rail marked in red, to the left side of the top right extrusion where marked in red).

    • 1-2-3 blocks can be used in place of measuring.

    • Once the Y rail is squared you should re-tighten the bolts in the X carriages to retain the Y rail.

    • Ideal belt tension is between 40 - 50hz as measured on the short spans on the left of the printer between the idler mounts.

  3. Center your X rails by loosening the retaining bolts and installing the alignment jigs on opposite sides of the rail.
    • Center your X rails by loosening the retaining bolts and installing the alignment jigs on opposite sides of the rail.

    • Tighten the rail back to the extrusion and repeat for the next X rail.

    • Loosen the bolts in the Z brackets for one tower, so it can move freely.

    • Lower the Z yoke by spinning the lead screw, until the yoke is just above the leadscrew coupler.

    • Tighten down the lower Z bracket, be sure the Z extrusion is pushed flush against the side extrusions as you tighten the brackets.

    • Move the yoke into the center of the Z tower.

    • Use a calipers or a ruler to measure from your front panel to the Z extrusion at the bottom.

    • Repeat the same measurement near the top of the Z tower, and adjust until it's equal.

    • Tighten the top of the Z tower. Repeat for all 3 towers.

    • Loosen your X endstop mount. Move it to back side of the right extrusion.

    • Move the X endstop to be against the rear X carriage, be sure the switch triggers.

    • Tighten down the X endstop.

Finish Line

Ben Withem

Member since: 01/02/2022

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19 Guides authored

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