On 9/28/2006 at 2:19 AM ard at p850ug1.demon.co.uk wrote:
In the UK, similar punches are sold by RS components, I
have no idea who
really makes them. They are expensive (about \pounds 100 each), but do a
great job. I invested in the DB sized one (all I can really justify), and
never regretted it...
I've got a set of Greenlee punches, but for many things (DB-type cutouts
included), it's easier to use nibbler. Drill a hole large enough to fit
the bit, and just nibble away.
Cheap manual nibblers (about $10) work, but are a little hard on the hand
after awhile, particularly if you've got heavy gauge sheet metal.
If you've got a compressed air supply, you can pick up a pneumatic nibbler
for about $30 from your local cheap Chinese tool store (e.g. Harbor
Freight). These can make just about any shape hole in sheet metal up to 14
gauge very quickly and easily.
Cheers,
Chuck