Mechanical finishing & post-processing · finish comparison
Deburring vs Trimming
Deburring (mechanical finishing) and Trimming (3d-print & moulding post-processing) solve the same problem by different routes; deburr is the lower-cost option ($).
When to choose which
Choose Deburr
Choose Deburr when only sharp burrs remain after trimming.
- Removes handling hazards
- Prevents assembly interference
- Reduces loose-particle risk
Choose Trimming
Trimming is the pick when its strengths below matter more than Deburr's.
- Removes molding flash and membranes
- Restores intended edge profile
- Clears holes and vents
What the numbers say
- Deburr is the lower-cost option ($).
Scores side by side
Each score is 0–100 against every finish in this catalog. Corrosion is derived from salt-spray test duration and surface hardness from the finish layer's Vickers hardness where a measured figure exists; a finish that leaves the base metal's own surface is not rated for hardness. Cosmetic, lubricity and cost are FabDigit's engineering assessment. Scores and typical figures are screening data, not matched side-by-side tests or service-life rankings; ASTM B117 is a controlled salt-fog method, not a field-life prediction.
| Score | Deburr | Trimming |
|---|---|---|
| Corrosion resistance | 0 Minimal | 0 Minimal |
| Surface hardness / wear | — — | — — |
| Cosmetic quality | 20 Low | 10 Minimal |
| Lubricity | 5 Minimal | 0 Minimal |
| Cost | 8 $ | 8 $ |
Key numbers
| Property | Deburr | Trimming |
|---|---|---|
| Thickness | 0 µm | 0 µm |
| Electrical | Unchanged | Unchanged |
| Relative cost | Budget ($) | Budget ($) |
| Added lead time | 0–2 working days | 0–2 working days |
| RoHS | Compliant | Compliant |
| Instant quote | Yes | Yes |
Bold marks the side that is ahead on a row where more (or less, for cost and lead time) is better. Ranges are the typical specification window; the drawing call-out fixes the class.
Which materials take each finish
| Material family | Deburr | Trimming |
|---|---|---|
| Aluminum | Yes | Limited |
| Brass | Yes | No |
| Copper Alloy | Yes | No |
| Polymer | Yes | Yes |
| Polyurethane | — | Yes |
| Silicone | — | Yes |
| Stainless Steel | Yes | No |
| Steel | Yes | No |
| Titanium | Yes | No |
| Zinc Alloy | With care | Yes |
| Composite | — | With care |
| Magnesium Alloy | With care | No |
| FDM | — | Limited |
| SLA | — | Limited |
Deburr vs Trimming — frequently asked
What is the difference between Deburr and Trimming?
Deburring (mechanical finishing) and Trimming (3d-print & moulding post-processing) solve the same problem by different routes; deburr is the lower-cost option ($).
When should I use Deburr instead of Trimming?
Choose Deburr when only sharp burrs remain after trimming.
Is Deburr or Trimming cheaper?
Deburr is the lower-cost finish ($ against $ for Trimming) among the finishes FabDigit quotes. Both are priced per part with a lot minimum; the exact figure appears on the instant quote once the part is uploaded.