Skip to main content

​
Overview

The Dogbone Nuts are the nut-side of the PitClamp Mini quick‑release latch. Together with the Dogbone Bolts, they let you:
  • Attach or remove the OSSM motor from a PitClamp Mini base without tools
  • Secure the clamp under load while maintaining consistent alignment
  • Index rotation in 4° steps via a built‑in detent profile
This part is designed specifically for the PitClamp Mini system. Use it only with the matching Dogbone Bolts and PitClamp Mini base components.

​
What you need

  • 3D printer capable of printing PETG, ASA, ABS, or Nylon
  • Slicer profile that supports tree supports or equivalent
  • Matching PitClamp Mini components (Dogbone Bolts and base)
Print at least one spare set so you can swap quickly if a part wears during heavy use.
  • Quantity: 2 pieces (one left, one right) unless your assembly requires additional latch points
  • Orientation: Flat face down; detent features facing up for cleaner indexing
  • Nozzle: 0.4 mm (0.6 mm acceptable for stronger parts)
  • Layer height: 0.20 mm (0.24–0.28 mm for faster prints)
  • Perimeters (walls): 6
  • Top/bottom layers: 6 / 6
  • Infill: 10% Gyroid or Crosshatch
  • Supports: Tree supports with 5° threshold angle (support interface recommended)
  • Material: PETG or ASA recommended; ABS or Nylon for maximum heat and wear resistance
Avoid PLA for load‑bearing latch parts. PLA can creep and crack under clamp loads and elevated temperatures.
  • Infill: Gyroid 10%
  • Support style: Organic/Tree; Overhang threshold 5°; Enable support interface
  • XY compensation: start at 0.00 mm; adjust ±0.05–0.10 mm if fit is too tight/loose
For the best‑feeling detents, prioritize clean top surfaces: reduce print speed for the top layers and enable ironing only on top surfaces if your slicer supports it.

​
Post‑processing

  • Remove supports carefully from the detent pockets.
  • Deburr with a light pass of a deburring tool or fine file. Do not round over the detent edges—crisp edges improve the 4° indexing feel.
  • Optional: Dry‑fit and, if engagement is too tight, adjust slicer horizontal expansion by −0.05 mm and reprint.

​
Installation and fit‑check

1

Prepare the base and bolts

Ensure the PitClamp Mini base is installed and the matching Dogbone Bolts are printed and free of defects.
2

Seat the Dogbone Nuts

Place each Dogbone Nut into its pocket on the base with the detent features oriented to face the bolt’s mating profile.
3

Engage the latch

Insert the Dogbone Bolt through the clamp and rotate into the Dogbone Nut until you feel the detent click. Hand‑tighten to the normal clamping force.
You should feel distinct 4° “clicks” as you rotate, and the clamp should not back‑off under light manual load.
4

Verify clearance and alignment

Cycle the latch several times. Confirm no rubbing on adjacent printed parts and that the motor releases and re‑attaches smoothly.

​
Troubleshooting

  • Clean support residue from detent features
  • Increase top layers to 8 and reprint for smoother detents
  • Reduce print speed for top layers by 20%
  • Reduce horizontal expansion (XY compensation) by 0.05–0.10 mm and reprint
  • Verify support interface didn’t scar the mating surface; lightly deburr
  • Increase horizontal expansion by 0.05–0.10 mm and reprint
  • Increase perimeters to 7–8 for stiffer walls
  • Consider stiffer material (ASA/ABS/Nylon)
  • Print with higher‑temperature material (ASA/ABS/Nylon)
  • Increase infill to 20% and perimeters to 8
  • Ensure detents are printed facing up for best surface quality

​
Download files

STL File

Download for slicing

STEP File

For CAD modification

3MF (Full Assembly)

Pre‑configured print files
Inspect printed latch parts regularly. Replace immediately if you see cracking, layer separation, or rounded detents that reduce holding strength.