Delrin turns beautifully with clean chip formation and excellent surface finish. Its rigidity allows tight tolerances to be held consistently, making it a favorite for precision plastic parts.
| Parameter | Value |
|---|---|
| Achievable Tolerances | ±0.02 mm (±0.001") |
| Surface Finish | Ra 0.4-1.6 μm |
| Cutting Speed | 200-500 m/min |
| Feed Rate | 0.08-0.20 mm/rev |
| Tooling Recommendations | Sharp carbide or diamond inserts. Positive rake. No chip breaker needed — chips break cleanly. |
High speeds produce best finish
Sharp tools prevent melting
Air cooling usually sufficient
Light spring passes for best roundness
Gear blanks
Roller bushings
Threaded couplings
Precision sleeves
Cam followers
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