aaronse.github.io

MP3DP -Repeat- Assembly

Frame options

For the Repeat you can build the frame out of 20 series extrusions or most any flat material.

You can edit the CAD to suit your specific build and get the exact dimensions or DXF files from there. CAD files are available here

Once you get that choice sorted out, the most important step is getting it as square as you can. Measuring the diagonals and comparing them is the easiest way to check for square, in a cube there are 16 diagonals to check. Get them as accurate as you feel you need.

Common Components

Depending on your frame choice, some of the hardware will vary. Mounting things to 20 series extrusions typically requires M3x8mm screws, flat parts require wood, plastic, or metal screws that are 5mm longer than needed. Threaded inserts are available, press fit or heat set.

Corners

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Hub

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Rail

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Trucks

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Truck Triggers

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Core XY

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!!! note You can actually twist the rail with the truck screws. Using a flat reference across the top of your build you can measure your extruder to assure it is not twisting on the rail. If it is adjust opposite screws to twist the rail. Example - Tighten the front screw on the left and back screw on the right and the extruder will now slightly move up from as it moves from left to right (if the rail was level initially).

Stepper Mounts

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Belting the Gantry

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Z axis X3

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!!! note It can be easier to take these off when setting or adjusting the belt tension on this axis.

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Bed

SKR Wiring

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