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No Go

Well, I went and picked up a die today along with some cutting oil.....and...... it's a no go. I tried and it simply does not cut through Ti very well AT ALL. It did cut, but pretty poorly and not well enough that I would trust the threads. Now I am stuck with 20 M6 bolts needing some threads put to them, any suggestions now? Thanks!

Blake

I contacted Iron Horse and that is a no go as well. They simply replied with "Nope, can't thread the rest of the way". Any idea where this "cool $10 shop" might be located Clay.....????

Clay,
I bought a brand new die at the local hardware store (an Irwin, which I think is a reputable brand) and my dad said NOT to do the whole thing at once, to do like 1/2 a turn in then back it out then another 1/2 and so on. You are right though with how they turned out, just not nice and neat. I just bought the only "cutting oil" they had there and it was only like $4-$5 do sounds like that might be my problem. Clay, I will give you a buzz later on tonight if that is cool. See ya.

Blake Young

That's why most makers "roll" their threads when finished. They make a sharp, rough edge on the top of the thread and they take that down. You might be able to clean them with a thread file.

Can you post a picture of one of the threads in question?

I have a die and some mean cutting fluid here at work. Not to say mine will work any better than what you have already tried. Is it a solid die or an adjustable one?

I am really surprised that it didn't cut easily, I wonder what the OD of the material measures that you are trying to cut. Is it slightly bigger than what the threads measure. That could make a big difference too. Turning some of the excess material off will help but it would be hard to do and your nice new bolt might not look so nice and new afterwards.

If these bolts are going through a cover then it really doesn't matter what the threads look like because most likely they will have no impact on the strength of the bolt. You would just be threading them to get clearance?

I hope I am understanding your situation correctly. I will be at the shop Thursday to pick up the Rig for the weekend. If you like I can take one to try but you won't get it back until after I return from GA.

^ Yeah, what he said. ^

I was looking at some M6 Ti bolts and I think what your problem is, is that the un-threaded shoulder on most of the ones I have are to large an O.D. to thread. That would explain why yours were turning out crappy. You'll have to use an adjustable die or turn the shoulder diameter down to thread them.

^ Yeah, what he said. ^

If it's too big to thread how can it be at the min. O.D.

Must be some tuff CHIT!!! I'll check some numbers in the morning. So you are saying if you turn it down .005 smaller than the Major diameter, the die still does not cut... Is the minor diameter of the die the same as the minor dia of the bolt? I highly doubt you will break the bolt as long as you remove enough material to produce a 60% thread. Thats all we need right, clearance?

Yeah, what everyone else said! Thanks again Clay for taking a look at them, I really appreciate it. I don't know what I am going to do now with these bolts. I would think that IronHorse would be able to thread them the rest of the way because they had to thread them originally, I just don't know how they wouldn't be able to continue the threads if they put them there in the first place. Thanks again for the comments and help everyone!

Blake Young
GO HALL'S CYCLES !

So, if I were to find a place that "rolled" threads, is that what needs done to these?

That's a term used for cleaning up the threads after they are cut, normally on a lathe, and have high, sharp thread peaks. Those will tend to glad (SP?) or seize in the hole. Rooling takes that peak off making for smoother threading.

I agree with cool, send them back and have them make you some that have more threads.