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2020 Octagon 135° Joining Plate
A 6 mm flat joining plate that holds two 2020 extrusions at 135° to each other, the corner angle of an octagon frame or an angled chassis base. Each 20 mm wide arm has a 5.6 mm alignment key that drops into the 6 mm T-slot and two 5.5 mm clearance holes at 20 and 45 mm for M5 T-nuts, so mitered beam ends line up square to the plate without any fiddling.
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