Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 24 Pieces Sanding Bands Disc & Sticks Fluxing with boric acid may

Fluxing with boric acid may be required depending on the condition of the scrap

Ideal for painting natural organics that burn out during firing to create hollow silver forms

Buff files — also called buffing files — are not traditional cutting files but ceramic-coated finishing and burnishing tools shaped like familiar needle file profiles

For ongoing maintenance or replacement needs

For use with propane or natural gas only — not compatible with acetylene

Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 24 Pieces Sanding Bands Disc & Sticks Fluxing with boric acid mayImportant Notice: This set will ship incomplete. Due to ongoing supply constraints, Spearhead has been unable to fulfill all sizes in this kit as ordered. Otto Frei will contact you with the exact burs in stock, the sizes unavailable, and an updated reduced kit price at the time of your order. We are not back ordering missing sizes, as restocking timelines are unknown and inventory returns randomly. For reference, as of 7 29 2026, 15 of the 24 sizes