A file and a sander will do the job putting a small round-over on that edge fairly quickly.
A file and a sander will do the job putting a small round-over on that edge fairly quickly.
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The most expensive tool is the one you buy "cheaply" and often...
Did it with an old 3/8" router bit in a few passes. Worked well. Thanks, y'all..........
I have c-clamps made of malleable iron. I think what they mean is that it will bend pretty far before it breaks. Something about the grain structure and particles of carbon (graphite?) in the matrix, maybe...?
I think the old threaded sewer coupling some were just regular cast iron some are malleable iron. The cast iron ones break with a sledge hammer. the malleable have to be cut apart to replumb.
I have no idea where meehanite castings fit in.
Bill D.
HSS drill bits cut into cast iron pretty easily.... may not need to use a carbide bit if you already have hss on hand? Just a thought....
good luck,
JeffD
Back in the day, I was taught to never, never, never use oil when cutting cast iron. Something about making it hard. I've never done it and cast iron always drilled great for me. +1 about dialing the speed down as far as you can and doing light cuts with carbide tooling. The tool shouldn't catch. Cast iron just sort of turns to powder when it cuts.
But do consider taking measures to control the dust. It can get into things and it wouldn't be too good for bearings and stuff. Try to connect a shop vac to the router.
Files had always seemed kinda useless till I discovered a coarse file.