Another bahstahd thread

JoeyInCali

Maker of Joey Bautista Cues
Silver Member
Ok, at least it's not a joint screw.
.350 almost coarse.
Sorry, can't go metric on my lathe.:grin-square:
 

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Joey, and I thought you were coming up with a combined lefthand and right hand thread.
 
Joey, and I thought you were coming up with a combined lefthand and right hand thread.

Do you mean the one that when you screw it in, it hits bottom and then comes back out while turning the same direction???

Kim
 
or like this?

Joey, and I thought you were coming up with a combined lefthand and right hand thread.

Neil, I'm sure a differential thread like this is familiar to you.

7/16-14 LH into 5/8-18 RH

Hard to believe I made this almost 40 yrs ago.
 

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Neil, I'm sure a differential thread like this is familiar to you.

7/16-14 LH into 5/8-18 RH

Hard to believe I made this almost 40 yrs ago.

Nice work Bob, did you build that as a project during your apprenticeship training?
 
Nice Job

Neil, I'm sure a differential thread like this is familiar to you.

7/16-14 LH into 5/8-18 RH

Hard to believe I made this almost 40 yrs ago.

You made a nice job of it. My vice I made as an apprentice went mysteriously missing via the postal service.Money does not replace sentamental value.
The interesting thing about threads , is depending on the combination, it can be used as a reduction in movement or as an over geared movement like in your case.
I have recently seen a thread, that looks like a knurl pattern cut both left and right hand. It can assemble either LH or RH and is made to be in a glued assembly. 1 item to fit both ends of the assembly.Looked neat but no pics allowed sorry.
 
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