i'v come across a cast iron fireplace that will go just right with my woodburner but..... the fireplace opening is a little narrow for my burner to fit.
it needs about half an inch coming off each side, thought about using a angle grinder but don't think i could cut it perfectly straight, would look terrible crooked!
i could get use of a plasma cutter but don't know what it would do to the metal?
Cutting cast with a plasma cutter should not cause any problems, as the process of cutting is different to oxy acetylene and does not have the high latent heat likely to cause heat cracking
However I would try cutting with a grinder, using the thin 1.0mm laser cut discs
Any problems give me a shout
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