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Post by modernist on Jun 15, 2008 21:03:02 GMT
 I've not come accross these before but am a little puzzled as to their intended use. I think I may have read on another thread that someone ground off the screw  . As they have a hex drive they seem to be aimed at portable drill/drivers but you would need some power to drive the 32mm  Any thoughts on speed in a drill press? and what are they called  cheers Brian |
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Post by andy on Jun 15, 2008 21:15:01 GMT
Irwin 6x Blue Groove  available heremore information here |
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Post by paulchapman on Jun 15, 2008 21:55:20 GMT
I'm one of those who always files the thread into a plain point. I've always found drill bits with a threaded point which are designed for use in a power drill, bloody dangerous If you use them free-hand, they are pulled so fast into the wood that it rips the drill from your hand, possibly injuring your wrist. If you use them in a drill-stand, you end up with the wood (and vice) flying round. Maybe it's different with cordless drills (I don't have one) but I don't like them at all and always file them into a plain point - and they work perfectly well like that. Cheers Paul |
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Post by tusses on Jun 15, 2008 22:12:54 GMT
it reminds me of the old bits you used to use with a hand brace/drill ?
so I would guess from that , that they are for very slow speed setting on a cordless drill
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Post by paulchapman on Jun 15, 2008 23:15:06 GMT
it reminds me of the old bits you used to use with a hand brace/drill ? Yes, with a hand brace, the threaded point helps to pull the bit into the work, but with a power drill I don't see that you need that, provided the bit is sharp. Cheers Paul |
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Post by jaco on Jun 16, 2008 7:52:51 GMT
it reminds me of the old bits you used to use with a hand brace/drill ? Yes, with a hand brace, the threaded point helps to pull the bit into the work, but with a power drill I don't see that you need that, provided the bit is sharp. Cheers Paul Definitely hand use only. I have 2 hand braces' about 60yrs old, still use them once in a blue moon. Can only get bits for it at garage sales.  |
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Post by jake on Jun 16, 2008 8:13:35 GMT
I use them (well, not them, but ordinary auger bits with lead screws) with cordless drills ocassionally - I don't have any problem with them, I like them even.
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Post by modernist on Jun 16, 2008 8:17:38 GMT
My cordless won't drive the big one (32mm) but the others are OK.. Maybe they are meant for new high power cordless.
Brian
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Post by tusses on Jun 16, 2008 10:14:20 GMT
looking at it - I'd have said it was aimed at plumbers/electricians etc for running stuff through joists (like a posh spade bit). It looks a bit short for timber framing work ?
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Post by chippy1970 on Jun 24, 2008 19:57:35 GMT
I got a set of them when they first came out. I got them for door locks etc. Not that impressed with them, yes they are very fast but very rough too.
I would say they are great for drilling quick rough holes for sparks running wires thru joists but a bit too rough for drilling locks into an expensive hardwood door.
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