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Jewelry drills and burs

· Updated · 1 min read · Tools

Flex shaft with ball, cylinder, cone and flame burs

The flex shaft (or hanging motor) drives small drill bits and burs that pierce, cut and shape metal. It is one of the most versatile tools in the workshop.

Drill bit and bur #

The drill bit makes holes; the bur removes or shapes metal. Burs are made of steel, tungsten carbide or with a diamond coating.

Bur shapes #

  • Ball: for holes and stone seats.
  • Cylinder: for flat recesses.
  • Cone and inverted cone: for settings and bevels.
  • Flame: for curved shapes.
  • Disc: for cutting.

Speed and lubrication #

Each material and diameter needs its own speed. The bit is lubricated with wax to keep it from jamming or breaking.

Safety #

Secure the piece, wear safety glasses and keep hair and clothes tied back. Do not force the tool.

See also #

This entry was drafted with the help of AI and is pending review by the author.