What is deburring?
Deburring is the removal of burrs, sharp edges and leftover dross from a part after it's cut, drilled or punched. It makes parts safe to handle and ready for welding, coating or assembly, and it's a secondary process with its own labour cost.
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What does deburring mean in fabrication?
A burr is a sharp lip or ragged edge left by a cutting process. On laser and plasma cut parts it's mostly dross on the bottom edge, plus the nubs left by micro-joints. Drilling, punching and shearing leave burrs too.
Drawings use a few related notes:
- deburr all edges: remove every burr
- break sharp edges: take the sharpness off every edge
- edge rounding: give each edge a small radius, which helps coatings hold
How is deburring done?
Shops use three methods, depending on volume and part size:
- by hand, with files, sanding discs, grinders or pneumatic edge-trimming tools, for one-offs, bent or welded parts and edges a machine can't reach
- with a deburring machine, which carries parts on a conveyor under abrasive belts or brushes; it's the practical option for regular laser work, but someone still loads and unloads every part
- by tumbling or vibratory finishing, where batches of small parts are processed together in abrasive media
Stainless and aluminium often arrive with protective film. If the customer wants it kept on, deburr only the bottom edge, where the dross is.
Why does deburring matter?
A burr can cut the person handling the part, at the shop or at the customer's site. Coatings go thin over sharp edges and lift over dross, so parts going to powder coating or anodising need clean edges. Burrs also stop parts sitting flat, fitting together or welding cleanly.
When parts don't need deburring
Not every job needs it. Structural mild steel that will be welded, then blasted before galvanising or painting, gets its edges cleaned by the blasting. Parts the customer will grind during assembly may not need it either. Leaving deburring out should be a deliberate decision, written on the quote and agreed with the customer.
Deburring and quoting
Deburring is labour and handling on every part that needs it, so it belongs on the quote as its own line, priced from the part: quantity, size, edge length, one side or both, and machine or hand work. On large jobs it adds up. On one $80,000 job of stainless ladders, deburring every part would have added $10,000 in labour.
Tempus Tools prices deburring as a secondary process on the same quote as the cutting, and its production documents show the floor which parts need it.
Further reading: Deburring meaning: what it is and why it matters in metal fabrication
Related terms
Put deburring on every quote
Tempus Tools prices deburring as a secondary process from each part's properties, and production documents tell the floor which parts need it.
FAQs
What is edge rounding?
Edge rounding goes a step beyond deburring and gives each edge a small radius instead of a sharp corner. Coatings cover a rounded edge more evenly, so customers ask for it on parts going to powder coating or anodising. Many deburring machines deburr and round edges in one pass.
Do laser-cut parts need deburring?
Most do. Fibre lasers leave a sharp burr on the bottom edge of aluminium and a hard line of dross on stainless, even when the cut face looks clean. Well-cut mild steel needs less, but parts going to coating, welding or customer handling still benefit.
What is a deburring machine?
A deburring machine carries parts on a conveyor under abrasive belts, brushes or both, removing burrs and rounding edges as they pass. It's much faster than hand deburring for regular laser work, though an operator still loads and unloads every part.
How do you price deburring?
As a secondary process, from the factors that drive the labour: part quantity and size, edge length, one side or both, plain deburring or edge rounding, and machine or hand work. Show it as a visible line on the quote, so the customer sees what they're paying for.