How would this lathe tool be used?

I have to admit Mick, I’ve only ever taken the time to examine the Myford I owned.

Even the machines in the toolroom (except for the ball screws on the Cincinnati) missed out.

Apologies to Robin for my digression.

Neil,

As I recall, those gear covers were die-cast.

Swinging on the hinges when the cover was open invited problems.

Regards to all,

Sam

Expected top in Melbourne, a comfortable 26 degrees.

.

Martin Cleeve's 'Hot Rod' approach is a stylish alternative:

MichaelG.

No apology needed Sam, I know some folk get hot get hot under the collar if they start a thread and it veers away from the initial question, but not me. My question was answered and I got some bonus info. Digress away!

MichaelG - thanks for the link to to Tony Griffith's thread chasing page, interesting reading.

Robin.

I saw that thread, and my first thought was 'repair it? - just get another one off eBay'!

Or use a biscuit tin

Bonus, also increase it's value in one fell swoop

Very useful for cutting fine multi start threads. Grind back the teeth until you have the number of starts required, set in the tool post then set the lead screw to pitch multiplied by the number starts and cut the multi start thread in one operation.

.

That's ingenious

MichaelG.

Certainly is .

Just make sure the skew of the teeth and/or the front clearance is enough to allow for the increased helix angle without interference.

I see that vacant Moderator/Troll position left by the late lamented JS has now been filled. Good Work!

Thank you.