A little machine project for a fellow "Barner"

[rockfla]

I was honored to get a call from a fellow "barner" in need of somewhat of a Unicorn in the fastener world (OR at least the modern industrial fastener world). He was in need of a 5/16ths UNF "Fine" thread carriage head bolt. I was able to take a 5-1/2 long Silicone Bronze course thread carriage bolt we have had in stock for many many years and cut, turned and threaded to the needed length with a little help of advice from my machinist friend. First (from advice) I made a "collet" to hold the carriage bolt in my lathe. Then I was able to part it to length. Once I parted it to the proper length, I turned the body undersized by about .005 for threading. Then chamffered the end for threading, then threaded the bolt. Nothing to the level of "Mart" yet BUT working my way there!!!

[cadillac512]

Nice work! Those look great, and well done with the homemade collet.
Terry

[cas3]

Good job. When I cut threads with a die in the lathe I run the tail stock up against the die to help it start perfectly straight, and keep a little pressure on for a thread or two.

[Seth Swoboda]

Good work. Were these body bolts or for a pickup?

[rockfla]

Originally Posted by Seth Swoboda

Good work. Were these body bolts or for a pickup?

Not sure? Location was not discussed, just the need!!! Sorry

[rockfla]

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Originally Posted by cas3

Good job. When I cut threads with a die in the lathe I run the tail stock up against the die to help it start perfectly straight, and keep a little pressure on for a thread or two.

That's a good Idea. My buddy (who is a great machinist) is making me a "Die Holder" that fits into the tail stock......He uses four socket set screws that will center whatever die you have.....I will post picture when mine is done!!!

[Kube]

Originally Posted by cas3

Good job. When I cut threads with a die in the lathe I run the tail stock up against the die to help it start perfectly straight, and keep a little pressure on for a thread or two.

yep...

[rockfla]

CAS3
Here is the hex die holder my friend made for use in the tail stock, my next project is using his for a model to mike me one!

[Zeke3]

Great job! My last attempt at making a tool on my friend's lathe didn't look very pretty when done, but I think it is going to work okay. Your project turned out much better.

[cas3]

Rockfla, nice tool your friend made, but unnecessary in my opinion. Keep in mind I am not a skooled machinist, just a guy who has machines.
What I do, if the die is big enough to cover the face of the empty tail stock you just snug up to the die, put some pressure on it and turn the die with a wrench with the left hand while turning the tail crank to follow the cut. In this case, you had a small die so I would just put a flat chunk of steel scrap against the empty tail stock and snug up to that.
It will self center, and thread dead true with just a piece of flat stock snugged up.
Again, I am no expert, just how I would approach it. Good on you for helping a friend, that happens alot when you are the friend or neighbor with a machine !

[Terry,OH]

I usually contact Michael at Third Gen Auto to see if he has special hardware.

[DavidG]

In this instance Michael was unable to help.

[rockfla]

Originally Posted by Terry,OH

I usually contact Michael at Third Gen Auto to see if he has special hardware.

Terry


Michael and I talked about these a couple of years back....I have a custom manufacturer that can make them in the "thousands" to be cost advantageous BUT as you know, the demand is in the low one hundreds, IF that!!! NOT sure why the thread pitch matters as in the end, once the nut is on it, "usually" it would be near impossible to tell the thread pitch with a proper nut fit. BUT I am also for "as original" and "How Henry made them" SO I will do more than the normal guy to adhere to "as original" as well......Hence my zeal and thrill for making them and MOST happy to oblige!!!!