[TheForge] cutting 1/4 copper

[Kevin D]

Grover,

Thanks I'll keep the pressure on :)

If copper is works like brass, a chisel edge on the drill bit will keep it
from grabbing.

Kevin

 -----Original Message-----
 From: theforge-bounces at mailman.qth.net
 [mailto:theforge-bounces at mailman.qth.net]On Behalf Of Grover Richardson
 Sent: Tuesday, April 12, 2005 12:28 PM
 To: 'Sponsored by ABANA'
 Subject: RE: [TheForge] cutting 1/4 copper


 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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