Editing Step 3 —
Assemble the arm supports

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3030 Inside Hidden Corner Bracket

Check that the grub screws on the inside corners are retracted to allow installation into the 3030 extrusion.

Slide one inside corner into the 3030 extrusion. Position it so that there is a measurement of 100mm from the top of the inside corner, to the top of the extrusion.

Tighten the indicated grub screw with a 3.0mm hex key, securing the corner into place.

Slide the remaining inside corner into the 3030 extrusion. Make sure the orientation mirrors that of the previously installed lower corner.

Do not fasten the grub screw on the second inside corner just yet.

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