Hi Tom. I don't have any experience turning 4130, but just wondering if you have 1.5-2" dia?
"Up to 10" round"... those must be some hefty paperweights you acquired! I kind of had my heart set on using cast iron to make some tooling & plates for my rotary table. CI round slabs are cheap in the states but that doesn't do me any good until shipped here. Could something like 6" dia be slabbed off into ~3/4" thickness, or is that what you mean by needing a new saw? I've had so-so experience machining bigger plates from cold drawn, sometimes they like to unload & warp a bit, mind you that was bar, not round.
"Up to 10" round"... those must be some hefty paperweights you acquired! I kind of had my heart set on using cast iron to make some tooling & plates for my rotary table. CI round slabs are cheap in the states but that doesn't do me any good until shipped here. Could something like 6" dia be slabbed off into ~3/4" thickness, or is that what you mean by needing a new saw? I've had so-so experience machining bigger plates from cold drawn, sometimes they like to unload & warp a bit, mind you that was bar, not round.