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8 mm Rod Split-Clamp Endstop Trip Collar
A split collar that clamps anywhere on 8 mm smooth rod with one M3 screw and a captured nut. Its 2.4 mm trip blade breaks the beam of a slotted optical endstop, and the 6 mm arm face presses a microswitch lever. It gives you adjustable travel limits on rod-guided carriages and arm axes that have no motor shaft to put a homing flag on. The collar is 22 mm OD x 10 mm tall with an 8.3 mm bore, and the part is 62 mm long overall.
NEMA 17 Homing Flag And Endstop Plate
A 5 mm plate that sits between a NEMA 17 stepper (31 mm M3 bolt square, 22 mm pilot) and whatever it's mounted to. It has an arm with slotted holes so you can slide a microswitch or optical endstop in or out to line it up. It prints with a flag collar for the 5 mm shaft (M3 set screw) attached by a snap-off tab, so a rotary joint or turntable can home to a repeatable position.
Adjustable Micro Switch Endstop Bracket
A right-angle limit-switch bracket: the 34 mm upright carries four 3.4 mm slots (two height rows) that take any micro switch with a 5–27 mm mounting-hole pitch — full-size V-series basic switches (22.2 mm pitch) and subminiature SS/D2F bodies (9.5 mm) both bolt on with M3 or M2.5 screws, switch mounted on the back face so the lever swings clear. The 44 x 22 x 5 mm base has two 5.5 mm M5 slots for 2020 extrusion T-nuts plus two 3.4 mm M3 holes on an 36 x 0 mm span for bolting flat to a plate, with 45° gussets and a pair of zip-tie ports for wire strain relief.