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Ned Ludd:
Please define "big stuff".

It may only be small in your eyes but today I was cutting several M12 by 1.5 threads in mild steel at
about 200 RPM in about a dozen or so passes. Yes, I know I could have turned the speed up but my
reactions ain't what they used to be. :( I could have taken less passes, by increasing the first
few passes, but I wasn't in any hurry. If it can work on that it will work on anything!
As an old saying goes "don't knock it, till you try it", they really are a very useful tool and if built to a reasonable standard are quite rigid.
Ned

No1_sonuk:
I've done up to M10 x 1.5 - not needed to go higher yet.

DaveH:
Hi,

Now lets be nice :D :D :D

:offtopic:

My problem is I don't have a brake on my lathe :(

So stopping in the same place is a little hit and miss. :doh:

Any thoughts

:beer:

DaveH

John Stevenson:
Biggest so far this week is 4" gas thread, that's 4.450" OD x 11 tpi

Smallest was M16 x 1.5

John S.

AdeV:

--- Quote from: DaveH on June 07, 2011, 06:54:14 PM ---
My problem is I don't have a brake on my lathe :(

So stopping in the same place is a little hit and miss. :doh:

--- End quote ---

I have the same problem - although the lathe does have a brake, it barely works, so - like you - stopping in the same place required a degree of co-ordination and reaction times that I simply don't posess. Not to mention the fact that all the bits of my lathe have so much inertia, that it's probably quicker for me to cut threads in the "traditional" way.

If I ever get a lathe like John Bogs's (which stops stone dead the instant you hit the footbrake), then for sure I will build one of these threading tools.

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