I need to cut a four inch hole in the steel lid of a barrel. I’m guessing that the steel is about 1.5mm thick but happy to be corrected if they are a standard thickness. I’d like to do a neat job not just hack at it.
Options considered are jigsaw but I dread to think how many blades I’d get through of how neat it would be. I could drill a series of holes around the circumference then jigsaw between. I could try the small angle grinder at an angle but think this would be difficult to control. I doubt any would be particularly neat and all require significant time with a file to neaten up. If there a way of drilling a 4 inch hole with some sort of core bit or hole saw. Needs to not cost a fortune for one hole
What’s my best option?
Cheers
Mark