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Rod-Clamp Station Pointer Collar
This part is for the 'NEMA17 Geneva Indexing Turntable' kit. The collar clamps to the top of the fixed 8 mm rod through an 8.3 mm bore, with an M3 set screw and a captured M3 nut. Its OD 11.4 × 4.5 mm pad holds the upper 608 bearing's inner race in place. The collar is 22 mm across and 14.5 mm tall. A 60 mm pointer arm ends in a 60° arrow that sits over the platter's r = 50 mm stations.
140 mm Six-Station Index Platter
The 140 mm × 4 mm work platter for the 'NEMA17 Geneva Indexing Turntable' kit. It bolts to the 608 spindle tube with 3x M3x6 bolts through counterbored 3.4 mm holes on a 38 mm PCD. The 24 mm centre hole clears the pointer collar's pad. Six stations sit at r = 50 mm, 60° apart, each with two M3 holes 20 mm apart and a 6 mm locating dimple for mounting fixtures. Six 3 × 3 mm radial ribs on the underside keep it flat. It prints top-face-down, so the work surface, dimples and 1 mm rim chamfer all come out off the bed.
608 Twin-Flange Spindle Tube
The rotating spindle riser for the 'NEMA17 Geneva Indexing Turntable' kit. It is 30 mm tall, with 46 mm flanges and an OD 30 body that flares out through a self-supporting 45° cone. The bottom flange bolts to the Geneva wheel with 3x M3x10 through 3.4 mm holes on a 38 mm PCD. The top takes an upper 608 bearing (8 × 22 × 7 mm) in a 22.05 mm press seat with a lead-in chamfer, and has 3x M3 heat-set inserts (4.0 × 5 mm) for the platter. The 10 mm through-bore clears the fixed 8 mm rod.
Geneva Crank Pin Driver
This is the one-piece driver for the 'NEMA17 Geneva Indexing Turntable' kit. It fits on the NEMA 17's 5 mm shaft through a 5.3 mm bore and is held by an M3 set screw with a captured M3 nut. It combines a 50 mm pin disc, which holds a 5 mm x 13 mm steel crank pin at 20 mm radius, with a 33 mm locking disc 9 mm tall. The locking disc has a relief cut into it and holds the 6-slot Geneva wheel still between its 60° steps.
Print-In-Place Geneva Indexer
A working 4-station Geneva mechanism that prints as one piece and turns straight off the plate: every 360° of the hand crank advances the 64 mm slotted wheel exactly 90° and then locks it. Base is 102 x 69 x 4 mm with 40 mm centre distance, a 6 mm drive pin, 0.4–0.5 mm running clearances and three M3 clearance ears (3.4 mm) for bolting it to a bench plate, chassis or demo board; overall height 21 mm to the crank knob.