Cutting Holes In Sheetmatal

[pepi]

(05-18-2016, 09:29 AM)Mayhem Wrote: Can you get a hole saw to suit a brace Ed?  That would be plenty slow enough

I frequently use hole saws in sheet metal and agree with what everyone else has said about using them.  I've had good results with my drill press but you have to ensure everything is locked down tight, as they can want to wander.  I've posted this before but this is the setup I used when making the burner tube for my furnace (that I haven't made yet).

Wounder if a longer bit in the saw would steady things up, long enough to be thru the material before the hole saw starts to cut. Hand drill and hole saw sounds a bit Flintstones. Cannot envision that as something I would do, fore see it adding another variable to the mix.

I did this cluster using a battery powered hand drill, 2.25 holes, exhaust pipe sliced up for the spacer rings.