Deburring

Deburring removes sharp flash and burrs from a blank after casting, stamping or machining. This includes removing burrs from internal holes that could scratch or cut a user’s hand before the part proceeds to finishing, assembly or functional testing.

Match the method to the feature

Start by identifying edges that could cut a user and features that must retain a precise fit. Brush or tumble light burrs; use manual scraping or a dedicated tool for holes, slots and critical edges. Batch tumbling is not a substitute for precise edge finishing.

Deburring station for removing sharp burrs from hardware blanks — Figure — Deburring station for removing sharp burrs from blanks and internal holes.

Verify before finishing

Use visual and safe-touch checks, then recheck the hole size and fit. Over-grinding can enlarge a hole, while a missed internal burr can cause injury, poor assembly or plating defects.

Die casting · Metal stamping · Polishing · Inspection and testing