Busch Fig. 231F/231FL/231FXL 2.3 mm x 0.20, 0.30 & 0.40mm Carbide Circular Cutters

Busch Fig. 231F, 231FL, and 231FXL carbide circular cutters are precision tools designed for the second step of pavé setting in hard metals. After drilling starter holes with a carbide twist drill, these circular cutters enlarge each hole to create a secure seat for the rondiste of the stone being set. The smallest 0.40 mm diameter is especially suited for cutting in tight corner areas and fine refinishing work.

Carbide burs offer the longest service life of any burs carried by Otto Frei, outlasting both tungsten vanadium and high-speed steel burs. They perform on the most demanding metals — including platinum, titanium, and steel — while also delivering exceptional longevity on standard gold alloys. Manufactured in Germany using advanced production techniques, these burs feature a powerful blade geometry typically reserved for steel tooling. Sold individually.

Features

• Designed for the second step of pavé setting in hard metals
• Enlarges starter holes to seat the rondiste of the gem securely
• 0.40 mm diameter suited for tight corner access and fine refinishing
• Carbide construction for maximum durability and extended service life
• Outperforms tungsten vanadium and high-speed steel burs in longevity
• Suitable for platinum, titanium, steel, and all gold alloys
• Powerful blade geometry manufactured to precision standards in Germany
• Sold individually

Specifications

Available Options

Notes

These circular cutters are included in the Busch Carbide Pavé Setting Bur Kit BC118.170. For best results in a complete pavé setting workflow, use in conjunction with the Carbide Twist Drill (Fig. 4205S) for starter holes and the Carbide Round Bur (Fig. 1AU) for initial hole enlargement prior to using these circular cutters.

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