[TheForge] cutting 1/4 copper

[Grover Richardson]

I have drilled and cut copper a fair amount.

WARNING WILL ROBINSON

	Copper work hardens fairly easily.  When you start a cut, keep it
cutting.  I have drilled, let the drill loaf, work harden the surface, and
been plagued with hard copper until I was finished with the work.  Also, it
tends to bite and grab the tool.

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Kevin D
Sent: Tuesday, April 12, 2005 11:57 AM
To: Sponsored by ABANA
Subject: RE: [TheForge] cutting 1/4 copper



Dave,

Actually a friend has a plasma cutter that he brought over.  I suppose it
was one capable of 20 ga. steel.  It was cute to watch that little arc just
sit there and hum...don't know what size plasma it would take.

On a similar vein, I was browsing a used machinery website and noticed a
plasma cutter that was billed as able to be a stick welder as well.  Does
anyone have any idea of a conversion for my old Hobart Truarc 250 to plasma
cut?  Not being familiar with plasma, I'd assume that copper would take more
juice than steel?  I'm not particularly inclined to invest in a plasma
cutter, but wouldn't mind rigging my compressor and buzz box to effect the
deal.

Kevin

 -----Original Message-----
 From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net]On Behalf Of magichammer
 Sent: Tuesday, April 12, 2005 11:29 AM
 To: Sponsored by ABANA
 Subject: Re: [TheForge] cutting 1/4 copper


 plasma cutter

 dave m

 Kevin D wrote:

 >How about a redsmithing question to break the lull?
 >
 >Last year a local scrap yard had some copper for sale, so I  bought a
couple  >hundred pounds at $1/lb.  So a buddy of mine would like a chunk out
of a  >~4'x5'x 1/4" plate that I'd bought.  We spent an hour and a half
chiseling  >down both sides until it was scored and work hardened enough to
lay it on a  >4x4 and jump on it to break it along the chisel line.  >
>We'd tried setting up a fence and cutting it with a sawzall, but  it
wouldn't  >cut straight.  The blade flexed too easily, perhaps too much
pressure?  >Anyway, anyone got any better ideas on how to cut out pieces?  >
>Kevin Donahoe  >Flying Pig Forge  >Morrow, OH 45152
>flyinpig at go-concepts.com  >
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