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Bonsai Nibbler, R-mini

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  • For use ONLY in a 3.2mm (1/8") collet
  • 4.5mm neck diameter
  • 16mm head diameter
  • 35mm long
  • CNC machined from a single piece of T431 high-tensile stainless steel
  • 3 Micrograin Tungsten carbide cutting tips
  • Maximum 33000 rpm
  • Complete with tips, screws and screwdriver.
  • Spare R-tips can be ordered here.
  • Spare screws can be ordered here.


The three tungsten carbide cutting tips in this Nibbler are indexable and replaceable. When the edges are blunt you simply unscrew the tips and turn them to a fresh edge. The tips are normally used in the metal-cutting industry to cut stainless steel so they will last exceptionally long when cutting wood.

This Nibbler fits only 3.2mm (1/8") collet such as the Dremel, Foredom and other popular tools. Works great with the Dremel flexible shaft.

All Nibblers are made from T431 grade stainless steel, which has nearly double the tensile strength of 304 grade stainless steel.


  • 4.5mm neck diameter
  • 16mm head diameter
  • 35mm overall length