Proxxon Diamond Drilling & Grinding Bit - 3.2mm Ball, 2-Pack (No. 28234)
A ball-shaped diamond-coated drilling and milling bit for precision work in glass, stone, and granite with Proxxon MICROMOT rotary tools and drill presses. The diamond coating delivers the hardness needed to drill and mill through hard, brittle materials that conventional bits cannot penetrate. Recommended for use on a drill press at 2,000 RPM with additional coolant to prevent overheating and bit damage. Supplied in a 2-pack.
Specifications
- Shape: Ball
- Diameter: 3.2mm
- Shank diameter: 2.35mm (3/32")
- Coating: Diamond
- Quantity: 2 bits per pack
- Recommended speed: 2,000 RPM
- Coolant: Required for use
- Part No.: 28234
Best Suited For
- Glass
- Stone (including granite)
- Ceramics and porcelain
Please note: For best results, use on a drill press with coolant at 2,000 RPM. Not recommended for freehand use at high speeds without coolant.
Works Well With
- Proxxon IBS/A Cordless Drill/Grinder – Compatible MICROMOT rotary tool for lower-speed applications
- Proxxon Diamond Drilling & Grinding Bit 1.0mm – Finer bit for smaller holes in the same hard materials
- Proxxon Diamond Drilling & Grinding Bit 1.5mm – Step up for slightly larger holes
- Proxxon Diamond Twist Drills 0.8mm + 1.2mm – Twist drill format for cleaner entry holes in glass and ceramic
- Distar Water Guard Kit for Proxxon LWB/A – Coolant delivery system; recommended for safe use of this bit
Further Reading
- How to Drill Through Tile Without Cracking It
- How to Drill Clean Holes in Porcelain Tile Without Cracking It – Proxxon IBS/A + Distar Rocket
- Engraver vs. Porcelain Tile: How to Cut Holes Without Chipping
Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. See our full return and refund policy.
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