Home » Audio » Craftsmen » Holes in metal w/o chassis punch. HELP!!!
Holes in metal w/o chassis punch. HELP!!! [message #29382] Wed, 26 January 2005 20:07 Go to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
I need to put a couple of 0.75" holes in a piece of copper sheeting. Yeah, I know a chassis punch is the way to go, but I don't have one. Any ideas?......Colin

Re: Depends on thickness [message #29383 is a reply to message #29382] Thu, 27 January 2005 03:11 Go to previous messageGo to next message
BillEpstein is currently offline  BillEpstein
Messages: 886
Registered: May 2009
Illuminati (2nd Degree)
If it's very thin you'll need to sandwich it between 2 pieces of plywood and clamp. Thicker sheet means cooling as you drill, a squirt of 3 in one oil. Just use one of those 'bi-metal' hole saws you buy at Lowes/Home Depot. About $10. Be sure and clamp the workpiece to the bench or drill press table. If you don't, the workpiece can easily get away from you and spin.
That's bad!
Better yet, while you're buying the hole saw, see how much a Greenlee punch is over in the electrical dept.

Re: Holes in metal w/o chassis punch. HELP!!! [message #29384 is a reply to message #29382] Thu, 27 January 2005 07:29 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
Hole saws have worked pretty well for me. I use it free-hand with a hand drill. Just go slow and use a bit of lubricant like Bill said. I always make sure there's a nice thick piece of MDF clamped tightly under the piece of metal to make sure the bits don't wander.

Gar.

Another thing: WEAR EYE PROTECTION! (nt) [message #29385 is a reply to message #29384] Thu, 27 January 2005 07:57 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
ny

Re: Another thing: WEAR EYE PROTECTION! (nt) [message #29386 is a reply to message #29385] Thu, 27 January 2005 09:02 Go to previous messageGo to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
Since second semester organic I always do. One experiment made a true believer out of me. It went BOOM in my face....Colin

Hole saw worked like a champ. Thanks (nt) [message #29387 is a reply to message #29384] Fri, 28 January 2005 23:16 Go to previous message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
.

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