CNC Tungsten Carbide Mini PCB Twist Drill Bit 0.8mm
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Prices updated: 13 Oct 2026
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About this product
A 0.8 mm tungsten carbide mini twist drill bit for CNC and rotary-tool work, used for drilling PCBs as well as plexiglass, plastics and engraved materials. The fine diameter suits the small holes needed for component leads on prototype boards.
Specifications
- Material
- Tungsten carbide steel alloy
- Diameter
- 0.8 mm
- Type
- Mini twist drill bit
- Suitable for
- PCB, plexiglass, plastics, engraved materials
Frequently asked questions
Will it fit my rotary tool?
The listing does not state the shank size. Measure the shank diameter and check it matches your rotary tool or CNC collet before use.
How do I avoid breaking the 0.8 mm bit?
Use a rigid setup with a slow, steady feed, and drill PCBs on a firm backing. Carbide bits are brittle, so avoid side pressure and bending.
