Description
Four specialist bits for glass, ceramic, and hard surface engraving. The Proxxon 4-piece glass engraving set combines diamond grinding bits for fine detail work with silicon carbide mounted points for texturing and frosting — covering the full range of engraving, scribing, and surface finishing techniques on glass, ceramic, stone, and hard plastics. All four bits share the standard 2.35mm (3/32") shank for compatibility with Micromot rotary tools.
What's Included
- Diamond grinding bit, round Ø 1/32" (1.0mm): Ultra-fine point for detailed line work, lettering, and intricate engraving on glass and ceramic
- Diamond grinding bit, round Ø 5/64" (1.8mm): Slightly larger round tip for broader strokes, shading, and faster material removal
- Silicon carbide mounted point, flat-end taper Ø 3/32" × 9/32" (2.5 × 7mm): For frosting, texturing flat areas, and scribing on glass and stone
- Silicon carbide mounted point, flame Ø 3/32" × 13/64" (2.5 × 5mm): Flame profile for contouring, curved surface texturing, and detail frosting
Key Specifications
- Pieces: 4
- Shank: 3/32" (2.35mm) — standard Micromot collet size
- Abrasives: Diamond (bits) and silicon carbide (mounted points)
- Applications: Engraving, scribing, finishing textures, frosting
- Part No.: 28920
Compatible Materials
- Glass: Glassware, mirrors, windows, decorative glass
- Ceramic and stone: Tiles, stoneware, granite, marble
- Hard plastics: Acrylic, polycarbonate
Frequently Asked Questions
What's the difference between the diamond bits and the silicon carbide points?
The diamond bits are for precise, fine-line engraving and detail work — they cut cleanly and hold their shape. The silicon carbide mounted points are better for broader surface work like frosting, texturing, and scribing where you want a more diffuse abrasive action.
Which Proxxon tools are these compatible with?
These bits fit any Micromot-compatible tool with a 2.35mm collet, including the GG 12 High-Speed Engraver, the IBS/E, and the IBS/A.
Can I use these on metal?
Diamond bits can be used on hardened steel and non-ferrous metals for scribing and marking, though they are optimized for glass, ceramic, and stone. For general metal engraving, the GE 20 Engraving Device is a better choice.
Works Well With
- Proxxon High-Speed Engraver GG 12 (No. 28592) — the ideal host tool for glass engraving with these bits
- Proxxon Complete Glass Engraving Set — GG 12 with Transformer & Bits (No. 38635) — full kit including the GG 12, transformer, and bit set
- Proxxon Professional Rotary Tool IBS/E — compatible corded Micromot host tool
- Proxxon Engraving Device GE 20 (No. 27106) — pantograph engraver for guided letter and number engraving
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. Please see our return and refund policy here.
California Residents Prop 65 Information
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.