3 WAy TOOLPOST for lathes

[bazmak]

any drawings or photos please.Just a note,i tried out the smallest boring bar
boring to 15dia from 13 dia hole.I had to grind the tool at the underside
to give clearance at these small sizes and also grind more front and side top rake.I assume when I use the larger sizes on larger diameters it will not be necessary to grind additional clearance
Also on a previous toolholder I fitted the TP in posn and drilled/bored from the lathe to get centre height exactly.This caused problems with the cutting tip
being higher than CL with these boring bars,so I made a 12dia boring bar
with HSS insert for this station which also uses the 10mm dia boring bars
hopefully I now have enough of all I need to bore.Boring but true

 

[goldstar31]

Barry,
I attempted to resurrect the Martin Cleeve articles as my wife's old associate Dr Bill Bennett did with George Thomas's.
I ran foul of copyright with Model Engineer and simply suggest where the information can be found.

As I said, I acquired the Cleeve tool recently and my boring gear is probably a lot smaller and neater from GHT's book- the Model Engineer's Workshop Manual. My opinion- for what it is worth- is that Thomas designed his stuff expressly for model maker's lathes whereas what you get 'from the shop' is probably clumsy and difficult to sharpen. Quite a lot of my so called inserted tool tips are broken little centre drills. I haven't quite got the hang of how to 'do them' on my tool and cutter grinders.

My tooling- incidentally- is not exhibition quality but suffices for my modest needs.