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03-02-2004, 08:51 PM
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#1 |
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Registered User
Join Date: Dec 2003
Location: Encinitas,CA
Posts: 316
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greenhorn ? about drill bits
so, as i am watching all these "hotrod" shows i always see them using a beveled drill bit to drill holes when "fabricating"... are these special and what is the advantage?
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no longer have a ride, but still a fan! |
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03-02-2004, 09:13 PM
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#2 |
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Registered User
Join Date: Jul 2003
Location: north of Phx AZ about 30 miles
Posts: 698
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Are you talking about those stepped drill bits? if so they use those so they don't have to change bitss all the time. They are not near accurate and they don't work well on thicker steel.
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Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold |
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03-02-2004, 09:17 PM
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#3 |
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Registered User
Join Date: Dec 2003
Location: Encinitas,CA
Posts: 316
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yes. that's what i'm talking about. ok. thought i was missing out on some essential tool!
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no longer have a ride, but still a fan! |
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03-02-2004, 09:20 PM
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#4 |
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Account Suspended
Join Date: Jun 2000
Location: over yonder
Posts: 14,270
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They are called UniBit. As far as being accurate ... they cut as accurately as a regular twist drill does in a hand-held drill motor ... which isn't too accurate. Be forewared ... they are expensive but very very handy when drilling in fiberglass, plastic or thin sheet metal.
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03-02-2004, 09:27 PM
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#5 |
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Registered User
Join Date: Feb 2004
Location: In a snowdrift in Manitoba
Posts: 39
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and they're Way harder to sharpen when they're dull..
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'70 C-10, mostly rust n' dust '74 BMW R90/6 "The quickest way to get yourself out of a hole, is to stop digging..." |
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03-02-2004, 09:30 PM
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#6 |
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Inline 69
Join Date: Apr 2003
Location: valleysprings,california
Posts: 1,018
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03-03-2004, 10:27 AM
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#7 |
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Registered User
Join Date: May 2002
Location: Gainesville, Georgia
Posts: 704
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Yeah, watching American Chopper makes me cringe sometimes! Pauli loves those unibits! I'm yelling t the TV--- Get the right bit!!! But hey, my name is MrGoodpliers.
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We made Oklahoma a little after 3, Randy & his brother Bob & my old GMC... |
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03-03-2004, 02:05 PM
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#8 |
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Wiseass secured himself a BAN
Join Date: Nov 2000
Location: MOON!!!
Posts: 2,282
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They have there purpose. On American Chopper they mainly use it for thin sheet metal and pipe. They would be great on putting in trim holes or drilling through the firewall.
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03-03-2004, 06:22 PM
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#9 |
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Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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On thin sheet they do a far better job of drilling than a twist drill. You end up with a round hole and the sheet isn't deformed. If you have the equipment, like Boyd Cottington, punch the holes. If not, use a step drill.
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Fred There is no such thing as too much cam...just not enough engine. 
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