Shop made all-thread

[Doozer]

Set the compound parallel with the bed.
Makes it easier to adjust when picking up a thread.
Forget the 29.5555555 degree thing.
It is only plastic.
Hell, I cut threads in steel with the coompound parallel,
and my threads look great.
Don't tell anyone.
Someone is sure to say I don't know HTRAL.

--Dooer

[Black_Moons]

Prethreaded Delrin or hard Nylon is just as expensive as steel all thread.

Pops

Ah, So its really cheap then.

[armedandsafe]

Ah, So its really cheap then.

I don't consider $8 a foot plus tax to be cheap when I just bought 6 feet of Nylon for less than $8 total, delivered. Delrin will run about twice that, but is still much less than steel all thread.

Pops

[macona]

Use a driving center.

[Black_Moons]

I don't consider $8 a foot plus tax to be cheap when I just bought 6 feet of Nylon for less than $8 total, delivered. Delrin will run about twice that, but is still much less than steel all thread.

Pops

Then its not 'just as expensive as steel all thread' is it?

Personally, I would suggest trying to use a die. You might not even have to turn it to size first... I think after trying some small chunks with a die, Maybe make a sizing die if needed first (its only plastic, any old steel should cut a good length easily) and seeing if it worked well..

I would make some a nice die wrench and try and thread 6' lengths being held in my lathe chuck while I hold the die wrench, with the material being supported just by the die and headstock, no tail stock (Start a few threads manually before turning on the lathe..). Then part them with a band saw or chop saw or something.

Note: I don't think I would be so quick to try this with steel. 7/8" nylon rod sounds like it would snap before I do and that the cutting forces would be minimal

[armedandsafe]

Then its not 'just as expensive as steel all thread' is it?

Well, I did mislead you, I guess. The price I quoted for Nylon and mentioned for Delrin/Acetal is for smooth rod. I don't have the prices for prethreaded rod in my head as they were no better than steel all thread and I'm looking for cost reduction. I rejected that material as I looked through the searches, as I would gain nothing to, perhaps, 15 minutes production time per pair.

My apologies for having mis-spoken.

Pops

[armedandsafe]

Personally, I would suggest trying to use a die. You might not even have to turn it to size first... I think after trying some small chunks with a die, Maybe make a sizing die if needed first (its only plastic, any old steel should cut a good length easily) and seeing if it worked well..

I would make some a nice die wrench and try and thread 6' lengths being held in my lathe chuck while I hold the die wrench, with the material being supported just by the die and headstock, no tail stock (Start a few threads manually before turning on the lathe..). Then part them with a band saw or chop saw or something.

Note: I don't think I would be so quick to try this with steel. 7/8" nylon rod sounds like it would snap before I do and that the cutting forces would be minimal

I have a good 7/8-14 die and will try that. Thank you.

Pops

[WaveDude]

Would be interested in how this goes if you try threading with the lathe. I had to thread a 3/8" piece of mild-steel about 10" and it was a "noodle". Flexed like crazy in the middle and using a follow rest was no fun.

[armedandsafe]

Would be interested in how this goes if you try threading with the lathe. I had to thread a 3/8" piece of mild-steel about 10" and it was a "noodle". Flexed like crazy in the middle and using a follow rest was no fun.

The raw stock material should be in tomorrow or early next week. I'll post my results.

I can see that problem with 3/8 at 10 inches. In my case I'm running 7/8 and quite shorter, with a live center. As I've never used a follow rest, I can't comment on that.

Pops

[elf]

What's the cost of purchasing the threaded stock compared to the full cost of machining it. Don't forget to include lost profits from being able to do other jobs if you don't machine the threads