Type 680 FractionalTools - Drills - Glass and Tile Drills
Discontinued, While Supplies Last.
Description
- Carbide tip brazed to hardened tool steel body
- Long carbide tip permits many regrinds
Modifications
Coatings available:
- TITANIUM NITRIDE - TiN
- TITANIUM CARBONITRIDE - TiCN
- ZIRCONIUM NITRIDE - ZrN
- AL TITANIUM NITRIDE - AITiN
Use
- For drilling glass, tile porcelain, ceramic and other hard, fragile materials without chipping or cracking the material when properly used
- Speed should be approx. 25 surface feet per minute (150 to 760 RPM based on tool diameter) using a steady, moderate hand feed
- Constant flow of coolant important
- Material being drilled should be backed with wood or rubber to support material during drill break-through
- Avoid vibration and excessive stress
- Keep drill sharp to eliminate excessive pressure
| Decimal Diameter | Fractional Diameter | Overall Length | Shank Diameter | EDP | Price | 0.5625 | 9/16 | 4 | 1/2 | 68036 | $89.70 | 0.6250 | 5/8 | 4 | 9/16 | 68040 | $108.05 | 0.2500 | 1/4 | 2 1/2 | 7/32 | 68016 | $36.00 | 0.3125 | 5/16 | 3 | 1/4 | 68020 | $46.30 | 0.3750 | 3/8 | 3 1/2 | 5/16 | 68024 | $51.55 | 0.4375 | 7/16 | 3 1/2 | 3/8 | 68028 | $58.55 | 0.5000 | 1/2 | 3 1/2 | 7/16 | 68032 | $63.85 | 0.1250 | 1/8 | 2 1/2 | 7/64 | 68008 | $31.40 | 0.1875 | 3/16 | 2 1/2 | 5/32 | 68012 | $31.40 |