These are top quality diamond coated twist drills from DESIC. They are especially suited for drilling holes in stone, glass, ceramic and other very hard non-metallic materials. Recommended for jewellery making, lapidary, crafts, art and hobbies etc.
They can be used in all high speed rotary tools such as Dremel, Foredom, Ryobi, Fuller, Ozito and GMC etc. Note that depending on the size drill bit you choose you may need an accessory 3 jaw chuck instead of a collet.
SET INCLUDES
1 x 3.2mm (1/8") diamond coated twist drill
Total drill length 61mm
Coating length 36mm
FOR CUTTING MATERIALS
Greenstone
Granite
Glass
Marble
Porcelain
Ceramic tiles
Concrete
Hard epoxies
TIPS FOR BEST RESULTS
- Always use a coolant (usually water in a spray bottle) when drilling.
- Using a drill press is easier to keep the bit straight and avoid breakage.
- Twist drills can break when you least expect it so always wear safety glasses.
- Take the drill bit out of the hole frequently and flush with water to remove debris.
- For some drill sizes you may need to use an accessory 3 jaw chuck instead of a collet in order to firmly hold the drill bit.
- Do not force the drill bit, let the diamond do the cutting and drill at slow to moderate speed. Drilling too fast will just wear off the diamond plating prematurely.
- Oil after use to prevent rusting.
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