Bostitch Depth Adjustment Knob
Bostitch made solid gear, but the small plastics are always the first to go — and the depth adjustment knob is a regular on our bench. We've made this style of part before and can usually print yours without drama.

Bostitch made solid gear, but the small plastics are always the first to go — and the depth adjustment knob is a regular on our bench. We've made this style of part before and can usually print yours without drama.
Why these break
Adjustment knobs crack at the insert. The factory part is made from styrene-based plastic that loses its plasticisers over the years. It gets glassy, then one warm day it lets go under a load it used to handle easily.
How we reproduce them
This is a quick job on our end — we take dimensions from your old part, adjust for print tolerances, and run a small batch so you have spares for next time.
We print these in PETG-CF. Carbon-fibre PETG is noticeably stiffer than the stock plastic, so the part holds its shape under clamping force instead of slowly creeping loose.
Many plastic parts can be recreated, repaired, redesigned, or printed, depending on size, load, heat, material, and available samples. Bring in the damaged part or upload photos for assessment and we'll give you a straight answer before any work starts.
Part details
| Manufacturer | Bostitch |
|---|---|
| Vehicle / equipment type | Power tool |
| Common failure mode | Adjustment knobs crack at the insert |
| Typical use case | Direct replacement for the original depth adjustment knob on the Bostitch. |
Printing & reverse engineering
| Can print directly | Yes |
|---|---|
| Can scan from broken sample | Yes |
| Can redesign / improve | Yes |
| Recommended material | PETG-CF |
| Alternative materials | Nylon |
| Print technology | FDM |
| Difficulty | Easy |
| Estimated print time | 1–2 hours |
| Estimated cost range | $12 – $28 |
| Expected lifespan | 5+ years in normal use |
| Outdoor suitable | No |
| Heat resistant | No |
| Load bearing | Depends |
| Requires post-processing | No |
Ask us about this part
Many plastic parts can be recreated, repaired, redesigned, or printed, depending on size, load, heat, material, and available samples.
