Need to use a large core drill to drill a hole? Don't like having to use a heavy household drill on your delicate jewellery and craft projects?
With a year of research and testing we have come up with the solution to your problem with these, the most popular sizes of large diamond coring drills, but with a 2.35mm or 3/32" shank. This means you can use these core drills in your Dremel hobby type drill or a pendant drill, making it lighter and easier to drill holes in all your hard materials.
So, whether you're a jeweller, glass artist, crafts person, hobbyist or scientist, these core drills have been designed with you in mind to make your life easier, so give them a try!
Working under 3mm on delicate glass or beads? See Small Diamond Core Drills (1–3mm).
For use on...
- Glass, mirror, enamel
- Stone, gemstone, rock, pebbles
- Ceramic, mosaic, porcelain, glazed pottery, tiles
- Bone, fossil, shell
In order to get the best from our Bottle Neck Diamond Core Drills and To find out how to drill through glass, shell, stone, glass bottles, pebbles and more, have a look at our Tutorials section on our blog plus take a look at the tool review for these core drills.
How to Use Our Bottle Neck Diamond Core Drills:
- Use with plenty of cold water (changing the water if it becomes cloudy)
- Use on a slow speed (we recommend 5,000 rpm)
- Use with very little pressure
Disclaimer. Using rotary tools near water has never been, to the best of our knowledge, endorsed by any of the rotary tool manufacturers. If you do choose to drill near water or with attachments under water connected to your drill then you do so at your own risk. Please be aware that mixing electricity and water can be very dangerous.
