| Left handed drill bits [message #303633] |
Fri, 15 July 2016 18:07  |
George
Messages: 14
Registered: January 2004
Location: Flagstaff, AZ
Karma: 0
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Junior Member |
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Who makes strong left handed drill bits for removing broken bolts?
George Castleberry
73 Painted Desert
Flagstaff, AZ
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| Re: [GMCnet] Left handed drill bits [message #303635 is a reply to message #303633] |
Fri, 15 July 2016 18:12  |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Grainger. Harbor Freight. Autozone. Amazon. Fastenal.
Dolph Santorine
DE N8JPC
Wheeling, West Virginia
1977 ex-Palm Beach TZE167V100820
1-ton, Sullybuilt Bags, Reaction Arms, 3.70 LSD, Manny Transmission, EV-6010,
> On Jul 15, 2016, at 7:07 PM, George wrote:
>
> Who makes strong left handed drill bits for removing broken bolts?
> --
> George Castleberry
> 73 Painted Desert
> Flagstaff, AZ
>
> _______________________________________________
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| Re: Left handed drill bits [message #303644 is a reply to message #303633] |
Fri, 15 July 2016 22:26 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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Got my set from the Snap-On tool truck. Came with the extractors (easy-outs) for each size bit. Not cheap. Titanium nitride bits, but that tends to make drill bits easier to break.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: Left handed drill bits [message #303648 is a reply to message #303644] |
Sat, 16 July 2016 08:04 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Senior Member |
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Please forgive me my ignorence, but what is the advantage og a drillbit beeing lefthanded ? I know the extractor, but what do they care what way the hole is drilled?
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: Left handed drill bits [message #303649 is a reply to message #303633] |
Sat, 16 July 2016 08:43 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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I've never seen a left handed drill bit. The E-Z Out bits have a left thread to make them bite while removing whatever. I'm with Appie though - what matters it which direction the hole was drilled?
==johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Left handed drill bits [message #303650 is a reply to message #303633] |
Sat, 16 July 2016 08:49 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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It helps coax it out at you drill instead of jam it in more. Sometimes the act of drilling removes the broken bolt. But not often.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Left handed drill bits [message #303651 is a reply to message #303649] |
Sat, 16 July 2016 08:46 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Sometimes you get lucky and the drill will hook the stud and extract it.
Bolts that have broken from over tightening fit this description. Bolts
that have broken from being fun in crooked however do not.
Sully
77 eleganza2
Seattle
On Saturday, July 16, 2016, Johnny Bridges via Gmclist <
gmclist@list.gmcnet.org> wrote:
> I've never seen a left handed drill bit. The E-Z Out bits have a left
> thread to make them bite while removing whatever. I'm with Appie though -
> what
> matters it which direction the hole was drilled?
>
> ==johnny
> --
> '76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and
> add - ons.
> Braselton, Ga.
>
> "Sometimes I wonder what tomorrow's gonna bring when I think about my
> dirty life and times" --Warren Zevon
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: Left handed drill bits [message #303658 is a reply to message #303633] |
Sat, 16 July 2016 14:18 |
George
Messages: 14
Registered: January 2004
Location: Flagstaff, AZ
Karma: 0
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Junior Member |
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Thanks for the input. I'll try the Hanson's.
This is for my 1954 Austin Healey...wish me luck!
George
George Castleberry
73 Painted Desert
Flagstaff, AZ
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| Re: [GMCnet] Left handed drill bits [message #303679 is a reply to message #303675] |
Sat, 16 July 2016 21:29 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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I would turn off the auto correct if it did not save me more than flame me.
Ugh
Sully
77 eleganza 2
Seattle
On Saturday, July 16, 2016, Todd Sullivan wrote:
> Removing the remainder my chunk and saving the threads is always the best
> plan even if it takes longer to accomplish.
>
> Sully
> 77 eleganza 2
> Seattle
>
> On Saturday, July 16, 2016, David H. Jarvis > wrote:
>
>> Would it not be easier to drill and tap it?
>> How much does a left hand drill bit cost?
>> Or, drill it out and put in a HeliCoil.
>>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: Left handed drill bits [message #303689 is a reply to message #303633] |
Sun, 17 July 2016 09:57 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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I get mine from McMaster. They sell individual LH bits so you can get just the sizes you need. I have poor luck drilling broken bolts unless I use some king of drill guide or drill bushing. I do not know if there is a source for drill guides as I usually make mine on the lathe as needed.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Left handed drill bits [message #303697 is a reply to message #303689] |
Sun, 17 July 2016 11:51 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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A very sharp center punch rapped in the center of the broken stud helps
keep the drill from sliding off of center.
Sully
77 eleganza 2
Seattle
On Sunday, July 17, 2016, Steve Southworth wrote:
> I get mine from McMaster. They sell individual LH bits so you can get
> just the sizes you need. I have poor luck drilling broken bolts unless I
> use
> some king of drill guide or drill bushing. I do not know if there is a
> source for drill guides as I usually make mine on the lathe as needed.
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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