5/8 in Baby Pin (Spud) Sleeve
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Round 5/8 in baby pin or spigot: A_SPUD_58 slides down over a pin pointing up (Mafer-type clamp pin, stand top, grip head pin); A_SPUD_58_h goes on a pin sticking out sideways (baby wall plate on a cart side). An M6 heat-set insert and thumbscrew grip the pin. Not for threaded studs.

PRINT SETTINGS
  Filament:  PETG
  Walls:     5
  Infill:    35% gyroid
  Orientation: the files are already oriented for printing. Put them on the plate as they load.

WHAT IT IS
  A dock adapter. It holds the receiver that any swappable holder on the site clicks into: print the
  holder's Dock (swap between mounts) version, fix this adapter to your carrier, and drop the holder in
  from above until it clicks. Press the release pad and lift to take it off.
  Lock screw (every adapter): 1 x M5 short heat-set insert + 1 x M5 x 25 knurled thumbscrew (DIN 464) in the 45-degree lock boss. Optional on a bench, use it on moving carts and lift gates.

FILES
  - A_SPUD_58.stl
      fits: ROUND 5/8 in baby pin or spigot pointing UP: Matthews Super Mafer pin, a super clamp fitted with a 5/8 in spigot, combo-stand or baby-stand top, grip head pin, cart baby-pin plate turned up. NOT threaded studs (Manfrotto 037-type 1/4-20 / 3/8-16 studs): those do not fit
      hardware: 1 x M6 x 12.7 heat-set insert (8.0 mm hole; CNC Kitchen or Prusa M6 standard) + 1 x M6 x 25 knurled thumbscrew (DIN 464). 1/4-20: only an insert that holds in an 8.0 mm hole (test it on SCREW_fit_coupon, which also has an 8.6 hole for tapered 1/4-20 inserts) + 1/4-20 x 1 in thumbscrew
      fitting: slide the sleeve down over the pin and turn the thumbscrew (on the right side, 16 mm above the sleeve bottom) until firm. The bore is 44 mm deep: on long pins such as the Matthews Super Mafer pin (about 73 mm proud of the clamp) the bore roof sits on the pin tip and the sleeve stands about 29 mm above the clamp; only pins shorter than 44 mm let the bottom face sit on the shoulder. Either way the thumbscrew grips the pin
      rating: 1.5 kg with thumbscrew + lock screw (the pin takes bending; rotation held by the thumbscrew)
      on the plate: on its -y cheek (latch arm and tab flat on the bed), no supports; the bore prints lying down with a 45 deg teardrop roof (the thumbscrew pushes the pin onto the round side)
  - A_SPUD_58_h.stl
      fits: 5/8 in baby pin sticking OUT horizontally: baby wall plate / baby plate screwed to a cart side, a Mafer-type clamp with its stud level, a pin on a gobo head
      hardware: 1 x M6 x 12.7 heat-set insert (8.0 mm hole; CNC Kitchen or Prusa M6 standard) + 1 x M6 x 25 knurled thumbscrew (DIN 464). 1/4-20: only an insert that holds in an 8.0 mm hole (test it on SCREW_fit_coupon, which also has an 8.6 hole for tapered 1/4-20 inserts) + 1/4-20 x 1 in thumbscrew
      fitting: push the sleeve onto the pin (36 mm bore; longer pins stop on the receiver back), tighten the thumbscrew on the right
      rating: 1.0 kg with thumbscrew + lock screw: a round pin lets a side knock turn it; fine for a centred holder
      on the plate: on its -y cheek (latch arm and tab flat on the bed), no supports; the bore prints lying down with a 45 deg teardrop roof (the thumbscrew pushes the pin onto the round side)

TEST THE FIT FIRST
  Print the fit coupons from the Test pieces section and check them on your own gear before a long print.

Holders that click into it: https://cart-tools.sdos-placeholder.workers.dev/

Not affiliated with or endorsed by Magliner, Backstage Equipment, ToughBuilt, Milwaukee, Hollyland, Eartec, Sekonic, Inovativ, Matthews or Manfrotto. Brand names only say what a holder fits.
