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NEMA17 Spool Standoff Cage
This is the motor cage for the 'NEMA17 Hanging Wall Polargraph Drawbot' kit (print two). It has a 66 x 66 x 6 mm NEMA17 plate with four 3.4 mm holes on a 31 mm square for M3x10 screws and a 22.4 mm bore for the pilot boss. Four 12 mm posts, 55 mm tall, have 5.5 mm bores for M4 heat-set inserts and bolt to the Wall Backer Plate. They hold the stepper facing out from the wall and leave a 42 mm clear space where the line spool turns, with a web on the top side and the other three sides open.
🧩 Part of the NEMA17 Hanging Wall Polargraph Drawbot (holds the stepper body-out, houses the spool) kit.
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