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Punching SS Enclosures? #39330
06/16/04 07:32 PM
06/16/04 07:32 PM
G
golf junkie  Offline OP
Member
Joined: Apr 2001
Posts: 507
York, NE
What is your preferred method for punching holes in stainless steel enclosures?

I've ruined hydraulic punch and die sets in the past, (split the die). Spent hours cutting and filing.

This time we are taking them to the local blacksmith who can burn them with a plasma torch. It's a hassle moving heavy enclosures and add a lot of time to the job.

How do you do it?

GJ

Work Gear for Electricians and the Trades
Re: Punching SS Enclosures? #39331
06/16/04 08:03 PM
06/16/04 08:03 PM
R
Ralpha494  Offline
Member
Joined: May 2004
Posts: 73
Pewaukee,WI,USA
It's been a while, but, the Greenlee Slug-buster with cutting oil on the die and punch. I heard the carbide tipped hole saws with lotsa cutting fluid at a real slow speed works. I would have to use drill bits to get to the size for the 1/2 inch punch. Last week I finally got around to putting some "white out" on the tiny lines for lining the punch up and boy is that nice to be able to see where it's supposed to be. I just smeared it on, wiped it off, and it stayed in the line.

Re: Punching SS Enclosures? #39332
06/16/04 08:40 PM
06/16/04 08:40 PM
N
Nick  Offline
Member
Joined: Aug 2001
Posts: 599
Riverside, CA
Greenlee makes dies for stainless steel. Also, when using a hole saw a little Beeswax works wonders. [Linked Image]

Re: Punching SS Enclosures? #39333
06/16/04 09:11 PM
06/16/04 09:11 PM
R
rizer  Offline
Member
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
heavy pressure. slow speed NO OIL, i can cut holes all day with this method. also. lennox hole saws and hacksaw blades are the best standard holesaw on the market. if you run the speed up you'll temper the stainless and regret it. the special greenlee dies are bronze colored . but ive found for 1/2"-1" you do just as much work making the hole for the lug as hole sawing. also, try using an 11/4 fender washer to stop the holesaw from digging in when you drill your pilot hole.

Re: Punching SS Enclosures? #39334
06/16/04 09:29 PM
06/16/04 09:29 PM
T
twh  Offline
Member
Joined: Mar 2004
Posts: 926
Regina, Sask.

Re: Punching SS Enclosures? #39335
06/17/04 03:16 AM
06/17/04 03:16 AM
B
Big Jim  Offline
Member
Joined: Jul 2003
Posts: 394
Denver, CO USA
I'll second rizer on the slow and heavy for drilling. I recently had a project that involved installing some SS continuous hinge. I ruined several bits before I went with low speed. Once I figured that out, one bit made a couple of dozen holes without being reshapened.

Re: Punching SS Enclosures? #39336
06/17/04 10:25 AM
06/17/04 10:25 AM
C
CDN_ELECTRICIAN  Offline
Member
Joined: Jan 2003
Posts: 73
Concord,Ontario,Canada
golf junkie

Man memories:

I agree with "Ralpha494".

We have worked alot with SS enclosures. In the begining I would jump would go nut's at the length of time and tool damage in punching holes in enclosures.
So I broke down and purchased a varity of Greenlee Slug-buster sizes along with SS Draw studs, and Titanium Drill bits for that first hole.
We still have tham after numerous years in their own little tool box just for SS work.
One thing we noticed is if your punching a bigger hole i.e. 11/4" we punch 1/2" first, then do the 1" stud, then to the 1/1/4".
This way the Power unit and punches do not over work, seems to take awhile but it is actually better than breaking a die set or draw stud and having to run around and buy one, which cost's more.
PS. The little bit of oil on the punch side of the buster.

Re: Punching SS Enclosures? #39337
06/18/04 06:39 PM
06/18/04 06:39 PM
G
golf junkie  Offline OP
Member
Joined: Apr 2001
Posts: 507
York, NE
thanks for all the tips guys.

GJ

Re: Punching SS Enclosures? #39338
06/18/04 11:03 PM
06/18/04 11:03 PM
N
nesparky  Offline
Member
Joined: Jun 2001
Posts: 642
omaha,ne
Found out that slow speed ,cuting oil and carbide tipped holesaws work best for me


ed
Re: Punching SS Enclosures? #39339
06/19/04 03:08 PM
06/19/04 03:08 PM
S
scameron81  Offline
Member
Joined: Feb 2004
Posts: 75
Healdsburg, ca, USA
In order to get our first hole started in SS we usually use a TEK screw that way we don't destroy our drill bits and they are faster.


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