[Land-speed] Fw: cutting/grinding tools?

[Ed Weldon]

Glen, et. al. -- 
I have a set of 4 Greenlee punches in my shop that I found a few years back
at a swap meet.  For the amount of use I've put them to I don't think I'd
pay retail price.  But they occasionally get used where a hole saw won't get
in.  Kind of a physical workout if you're trying to go through thicker steel
than 20 gauge.  You need access from both sides and a way to drill the pilot
hole.  If you're wrenching them you need about 3" clearance for 1-1-1/2" dia
holes on one side for an open end wrench and an extra two inches for a
ratchet and socket.
BTW the key to using a hole saw is to run it slow enough that you don't
overheat the steel cutting teeth.  I wouldn't use anything but bimetal on
steel and use some kind of cutting oil whenever I can.
Ed Weldon

----- Original Message ----- 
From: "Glen Barrett" <speedtimer at beyondbb.com>
To: "Ed Weldon" <23.weldon at comcast.net>; <land-speed at autox.team.net>
Sent: Monday, April 28, 2008 3:26 PM
Subject: Re: [Land-speed] Fw: cutting/grinding tools?


> OK Ed, how's this for an idea. Depending the hole diameter Greenlee hole
> punches used by electricians should do the job as they can be used with a
> wrench to turn the cutting die. They only need a couple of inches to make
a
> very clean round hole in sheet metal, almost any size is available. I just
> did a Google search and you can find them there.
> glen
> ----- Original Message ----- 
> From: "Ed Weldon" <23.weldon at comcast.net>
> To: <land-speed at autox.team.net>
> Sent: Monday, April 28, 2008 4:15 PM
> Subject: [Land-speed] Fw: cutting/grinding tools?