Hand Drills and bits for 1/4 bolts?
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Messages 41 - 42 of total 42 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
Vitaliy M.

Mountain climber
San Francisco
Topic Author's Reply - Mar 31, 2016 - 10:01am PT
Had a chance to test out the Dammer 1/4 set up. Works well! Psyched!
Tom

Big Wall climber
San Luis Obispo CA
Mar 31, 2016 - 10:10am PT
Sharpening sds bits if you are good with the wheel is the way to go.



Many of those carbide bits come from the factory rather dull. I think the idea is that an electric drill and high pressure is too much for a thin, sharp edge.

For hand drilling, I found that sharpening up the bits made a huge difference. The only thing is you have to tap rather lightly at first, until you've got the hole started. If you just smash away, you can chip the brittle carbide tip.


You'll need a silicon carbide wheel (green) because the aluminum oxide wheel (blue) is too soft to cut the carbide drill bit. Or, you could use diamond.
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