just a few bits

[bollie7]

(09-26-2016, 09:28 PM)oldskoolron Wrote: I measured it ed and its 20mm thick ill ask oldmate when I see him next what they for I think he said cast iron an he said I be ok using them on mild steel and alloys seein im a beginner basically

Ron
Obviously I have no idea what your lathe is but if a 20mm shank tool wont fit then I'd assume its not a real big machine. Depending on what your lathe is you might find it doesn't have enough power to run a carbide tool very well. It might not be worth the effort to modify the tools.
I only have a small belt drive lathe (can't remember the size atm) its a McMillan which is a rebadged Lontain from the early 1980's.
I have a box with a lot of large, insert carbide tool holders and tips which I have had for at least 20 years (from when I worked on the tools for a living) in the hope that one day I would have a lathe big and powerful enough to run them. I've recently accepted that unless I win lotto, its never going to happen, so I'm slowly sorting the tools and tips in preparation to moving them on.
I've found with my smaller lathe that is easier just to use HSS tools.
regards
peter