looking for a lefthanded wood bit

BHQ said:
well, nobody else has asked, so i'll bite
what the heck is a lefthanded wood bit?
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its basically a drill bit that drills while spinning to the left.....

heres what wiki says about them,

Left-hand bits are almost always twist bits and are predominantly used in the repetition engineering industry on screw machines or drilling heads. Left-handed drills allow a machining operation to continue when the spindle either cannot be reversed or where the design of the machine makes it more efficient to run left-handed. With the increased use of the more versatile CNC machines their usage is less common than when specialised machines were required for machining tasks.
They may also be used as an aid in the removal of common right-hand screws. Since the rotation of the drill bit is such as it would loosen the screw, using it to drill into the damaged screw head will usually remove the screw, providing the bit "grabs" the damaged material successfully.
 

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And I thought he was wanting 1/4" left hand lathe bits ground at the correct angle for wood and plastics like I sell. I forgot all about left hand drill bits.
Why does he want to drill left handed?
About the only use I can see is they would drill out right hand tapped holes a little cleaner since they would not try to follow the thread grooves.
 
cueman said:
And I thought he was wanting 1/4" left hand lathe bits ground at the correct angle for wood and plastics like I sell. I forgot all about left hand drill bits.
Why does he want to drill left handed?
About the only use I can see is they would drill out right hand tapped holes a little cleaner since they would not try to follow the thread grooves.
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That maybe, and I have done that in reverse for the reasons same reasons You probably have in mind, although I usually bore the hole with a small tool I have, instead of using a drill bit.

Uses for them as I have known were pretty much inline with the above definitions. I've used them for drilling & backing out right handed screws, and bolts, but I can remember dad say they used them back when he worked on planes, and from friends of mine that work with Grumman that they were used in the aircraft industry. I'm sure there are other industries that use them, as well as other uses, but those are the ones I know of.
 
cutter said:
Why he wants them is so he doesn't have to buy a reversing motor or reverse the whole motor to drill on a cue companion.

http://www.mytoolstore.com/hanson/hanson.html
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When I first read the topic it popped in My mind that maybe It was for a machine without reverse, then I thought well no It would actually be the opposite, but I couldn't think of any machines like that, All My machines have reverse except for maybe wood lathes, but I've never use a cue companion, and didn't realize they rotate backwards. Thanks for the clarification, and clearing that thought up.
 
Cue Crazy said:
When I first read the topic it popped in My mind that maybe It was for a machine without reverse, then I thought well no It would actually be the opposite, but I couldn't think of any machines like that, All My machines have reverse except for maybe wood lathes, but I've never use a cue companion, and didn't realize they rotate backwards. Thanks for the clarification, and clearing that thought up.
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I don't think they rotate backwards all the time. At least my old friends ran normal direction.
 
cueman said:
I don't think they rotate backwards all the time. At least my old friends ran normal direction.
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Well Maybe I misunderstood, or He means that the OP's motor is mounted backwards. If that is the case then reversing the motor's mounting would seem to be the better option since there is a better selection of right hand bits available, That's if it is even possible with the layout of the lathe, and I don't know what the original OP's intended purpose is. I'm not familiar enough with the machine to say, so I'm just throwing out thoughts here. All the lathes I have had ran normal direction, so I haven't ran into that issue.Another possible purpose for left hand bits may would be for backing out broken pins, but from the sizes asked for it sounds more like even what You mentioned or pin installation might the OP's intended use, but if it's pin installation, then that would suggest to me that the motor is mounted backwards. Hopefully The OP will clear it up.
 
cueman said:
And I thought he was wanting 1/4" left hand lathe bits ground at the correct angle for wood and plastics like I sell. I forgot all about left hand drill bits.
Why does he want to drill left handed?
About the only use I can see is they would drill out right hand tapped holes a little cleaner since they would not try to follow the thread grooves.
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I was thinking LH 1/4 lathe bits as well. :confused:
 
well the suspense is killing me its possible he was talking about the tool bit also.....

patiently awaiting the OP's response ;)
 
wow what a dumbA%% I am

I was talking about 1/4 and 5/16th reverst bits I am sorry that I had not checked sooner as I was looking in the wrong forum now that you Folks have answered so will I
Thanks
Irish
 
Thanks everyone I appreciate all the help

DirtyIrish said:
I was talking about 1/4 and 5/16th reverst bits I am sorry that I had not checked sooner as I was looking in the wrong forum now that you Folks have answered so will I
Thanks
Irish
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I want to thank all of you who helped thats why I like AZ over everything else
Irish
and to cutter there was a breakdown in comm and my money sat in limbo till the 15th I havea few shafts to do so I will be in tommorow (thurs to pick up the other thing hopefully I will have lathe and board fixed by monday
John
 
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