The drawing
Where to buy
Step by step
| Step | Action | What to do |
|---|---|---|
| 1 | Drill all the holes | Then take the part apart if you can reach both faces. |
| 2 | Choose the tool | Burring tool, bearing scraper, countersink or a bit larger than the hole. |
| 3 | Turn it by hand | A larger bit or a countersink is rotated by hand, never under power. |
| 4 | Both faces, every hole | Hand drilling leaves the worst burrs, because of the slow speed and extra pressure. |
| 5 | Clear the shavings | No shavings left between the sheets or in the holes. |
| 6 | Do the edges too | Smooth rough sheet edges before bending or fitting. |
Tools you need
| Tool | What for | Buying guide | Catalog |
|---|---|---|---|
| Deburring tool | Swivel blade for holes and edges | Deburring tools | Two-way tool |
| Hole deburrer | Holes from both sides | Deburring tools | In-out tool |
| Rosebud | Light chamfer | Deburring tools | Rosebud |
| Edge tool | Sheet edges | Edge tools | Edge deburr |
What to check when it is done
| Look at | Good | If not |
|---|---|---|
| Hole rim | Smooth; rivet seats flat | Deburr again |
| Between sheets | No shavings | Separate and clean |
| Sheet edge | Smooth, no nicks | File or burr; a nick can start a crack |
Questions people actually ask
Can I use a drill bit to deburr?
Yes, one larger than the hole, turned by hand.
Limits of this guide
What the sources support, and no further.
- The manual governs. Where the SRM, the drawing or the fastener maker says otherwise, follow them; this page explains general practice.
- Fatigue-critical structure may have its own edge finish rules: see the SRM.
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
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Distributors coming soon.
Sources
- FAA-H-8083-31B, Aviation Maintenance Technician Handbook: Airframe, Chapter 4 — p. 4-14, burrs and burring tool, Fig. 4-38; p. 4-40.
- FAA AC 43.13-1B CHG 1, Acceptable Methods, Techniques and Practices — par. 4-55, smooth rough edges and remove burrs; par. 4-58, deburr the hole.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.