circle cutter

[closekutt]

Old circle cutter,,,what was it used for making and or attaching to...

[rusty]

How odd...

Very heavy...my guess would be for cutting holes in sheet metal (like electric boxes  or duct work etc)

Or making washers, it only seems to cut certain sizes....

[oldgoaly]

my guess is it cuts rubber sheet (red) for boiler flanges, cutter wheels look to fragile for sheet metal.

[keykeeper]

Wish the pic were bigger. They don't enlarge for me. Can't make out any details.

[oldtools]

How do you change sizes?  change rings? do the cutters move to different sizes?

[jpalex]

Without a good close up, it looks to me like I see two cutter wheels like on a tubing cutter on each side. I bet you adjust those to the diameter of hole you need, drill a hole for the vertical bolt in the sheet metal, nut it up and turn away to cut the hole size you're chosen. Wonder how well that works, lot of pressure on the wheels at an angle!

[mikeswrenches]

I think this was made by Greenlee for enlarging holes.  A large knock-out hole could be enlarged by putting the existing hole over one of the "pilots" and turning the wheels.  I saw a picture of one of these, but can't remember where.

Mike

[OilyRascal]

Hard to get a perspective of size from the pictures, but that would be one hell of a "knock-out" hole by my eye.

[Chillylulu]

How close do those plates come to standard tin cans?

My thought is that you could place a round disk on the plate and push the edge down around it.  Then you would have a shallow lid to solder onto a can.

SWAG, but we roll grooves on pipe instead of threading anymore......