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Cup Burrs for Rounding Off Wire

CB1
  • 1.0mm - 2.3mm diameters

These carbon steel, concave Cup Burrs with a 2.35mm (3/32") shank have tiny teeth like cutters for grinding, cutting, smoothing and rounding off all metals making them ideal for stone setters, model makers and for rounding off wire for jewellery making purposes. Use either in a pin vice, rotary drill, micro motor, pendant drill, or flexshaft.

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Description

  • The 1.2mm cup burr will file wire thinner than 18 gauge
  • The 1.8mm cup burr will file thicker wire, up to 14 gauge

Tip: If using in a drill, be sure to go nice and slow as you may find the metal adhering to the concave part of the cup, clogging it up with swarf.

N.B Cup burrs are also sometimes referred to as wire rounders, cup burs, bur cups and deburrers.

If you're working with wire, you may also like our Jewellery pliers and cutters: Tronex Precision Pliers and Cutters

“I use the the cup burrs to round off the ends of taper pins which have been cut with side cutters. I use them hand held in a pin vice. The tapered pins are soft and are used in clock making/restoration and a taper pin left unfinished looks unsightly.Thanks for providing excellent products and service” - Tony Roberts

Technical

Cup Burrs

  • Shank: 2.35mm (3//32")
  • Overall length: 44mm

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