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Luke Malatesta
Big Wall climber
Moab UT
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Jan 11, 2012 - 10:25pm PT
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Aric,
Looking forward to checking it out.
Thanks!
Luke
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Clint Cummins
Trad climber
SF Bay area, CA
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Oct 22, 2012 - 07:27pm PT
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Even the Powers and Bosch carbide tip SDS bits break.
The trick is to not hit so hard.
Think of it like a power drill, with many small hits, instead of fewer big hits.
For example, Roger "chokes up" on his hammer handle.
My partner Bob breaks carbide tips fairly often; he hits fairly hard.
I hit much softer and rarely break them (maybe just 2 in the past 15 years).
It does take me a lot longer to drill a hole, though.
Mikey Schafer has been using bits with more than 2 flutes (when drilling a fresh hole) and likes them. I don't know what the breakage stats are on those, though.
http://statigr.am/p/276998260628754183_205507914
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grover
climber
Northern Mexico
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Oct 22, 2012 - 11:33pm PT
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Has anyone ever seen a 4" 3/8 SDS ????
It's been on the 'why the f!ck don't they make a...'list for years ....
meh
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Spider Savage
Mountain climber
The shaggy fringe of Los Angeles
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Oct 23, 2012 - 12:27am PT
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Clint Cummins
Trad climber
SF Bay area, CA
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Oct 23, 2012 - 12:35am PT
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Yes, those are 5.10 brand bits.
The broken ones illustrate the problem with the A-taper Rawl holder - they would often break when you hammered in the drift pin, to swap a dull bit for a sharp bit.
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Brian in SLC
Social climber
Salt Lake City, UT
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Oct 23, 2012 - 11:48am PT
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Has anyone ever seen a 4" 3/8 SDS ????
Hilti makes one for 10mm. Spendy little rig.
I made one from a worn out 6" by just chopping it down and sharpening it. Works in super soft rock is all. Kinda wonder if I tempered it...ahh, would probably just bust. Good for a light emergency kit is all, and, has to be soft rock (used in sandstone only for me).
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SuperTopo on the Web
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Luke
Let us know!