Right hand and left hand thread

[Spark plug]

I dont suppose the majority of people do LH threads either

Even to a professional turner, screw cutting LH threads mess with your head

 

[Seadog]

I’m doing some of these for @123hotchef and I need a left hand thread in one end and a right hand thread in the other they are trackrod adjusters[/QUOTE

Well I'm glad I didn't waste money buying the taps yet. Last I knew was that I was going to make them

 

[Jlg]

Were you? You're more than welcome if you want to

 

[Richard.]

Right thread cut from the front. Chuck rotation towards you and travel towards the chuck.

Left thread
Cutting tool at the back. Reverse the lathe chuck rotation keeping the lead screw direction the same towards the chuck.
So your lathe needs a tumble reverse

 

[Fazerruss]

No, if you do that on a myford you run the risk of unscrewing the chuck. You just change direction of the lead screw.

 

[Seadog]

Were you? You're more than welcome if you want to

No, too busy now. Have fun

 

[Jlg]

No, too busy now. Have fun

It'll be fun repeatedly centring 30mm stainless hex 20 times in a 4jaw

 

[hotponyshoes]

If it's hex can't you just stick it in a 3 jaw?

 

[snowcat]

L/H nut R/H nut machine a sleeve to length and TIG together lot easier than the ball ache of turning something from solid....

 

[123hotchef]

L/H nut R/H nut machine a sleeve to length and TIG together lot easier than the ball ache of turning something from solid....

That's how I made the others.

 

[Jlg]

If it's hex can't you just stick it in a 3 jaw?

If I had one that didn't have a half thou run out I would

 

[123hotchef]

If I had one that didn't have a half thou run out I would

Can't it be fixed

 

[123hotchef]

No, too busy now. Have fun

Well you never replied to the last messages on the 20.2.19 so I guessed you were not wanting to do the job.

 

[Jlg]

Can't it be fixed

I'm going to have another mess with it next week the jaws are badly damaged so I've been filling the high side down and for general turning it does anything that needs presition goes in the four jaw but if I could get it down to a quater thou I'd use it for the job for what the parts are a half thou would be fine but I'd rather it Was less

 

[hotponyshoes]

If that thread is the same size as a transit trackrod end I might have a left hand tap for it somewhere..

 

[Richard.]

I'm going to have another mess with it next week the jaws are badly damaged so I've been filling the high side down and for general turning it does anything that needs presition goes in the four jaw but if I could get it down to a quater thou I'd use it for the job for what the parts are a half thou would be fine but I'd rather it Was less

What is half a thou out? Have you got this figure from putting something perfectly round and straight in the chuck and taken a reading with the DTI off the end of it? If so then I’d say that 3 jaw chuck is incredibly accurate indeed. That is just over 0.01. Mine can be clocked bang on via the tapered screws but for a standard 3 jaw chuck 0.01 run out if checked properly is bloody impressive.

 

[hotponyshoes]

I would have though that's an acceptable tolerance for this application?

If I was making them for myself I don't expect I would even use the lathe, hex would get clamped in the vice, drill one hole all the way through, tap both ends to 'about' half way through.

 

[123hotchef]

I would have though that's an acceptable tolerance for this application?

If I was making them for myself I don't expect I would even use the lathe, hex would get clamped in the vice, drill one hole all the way through, tap both ends to 'about' half way through.

Drill stainless hex 150mm in length straight in a vice with a hand drill good luck

 

[eLuSiVeMiTe]

Drill stainless hex 150mm in length straight in a vice with a hand drill good luck

But the outside isnt important. If the hole is drilled through slightly on the **** it will make no difference to the application. The hole and threads will still be lined up and the outside diameters matter not.

Assumed he meant a pillar drill tbh.

 

[hotponyshoes]

It don't need to be that straight. You have got ball joints on both outer ends. All you need to do is adjust it once to set it up then adjust it again each time you bash the arms and bend something.

If I didn't have the correct size taps I would probably be buying some r/h & l/h nuts and welding them onto the end of a bit of tube!