[TCML] Primary Coil Copper Saving Idea
dogbrain_39560 at yahoo.com
Sun Mar 1 08:10:25 MST 2009
I've been patiently watching copper prices too, as I often squirrel away coiling stuff for the future. The fact that world copper prices have collapsed is only just now reaching Lowe's. My local Home Depot hasn't budged a bit on prices for copper or anything else--I've just about given up on them as a coiling source. Last year a 50' spool of 1/4" refrigeration tubing was about $50. At the time I also considered using thick THHN wire to save money, but it was so expensive, I couldn't see any cost advantage. These days that 50" spool of Cu toob is about $30 at my local Lowe's. I went ahead and bought one. I still miss the late 90's / early 00's when I could get it for $16-$18 per spool. Wish I'd bought a few and stashed them.
As far as Cu magnet wire...what's the deal? Has anyone found a rational price anywhere? I'm still living off my stash. $100 plus shipping for a 10 lb spool? Nuts! I'll give up coiling before I pay that.
Still money grubbing in Mississippi,
--- On Sat, 2/28/09, Yurtle Turtle <yurtle_t at yahoo.com> wrote:
> From: Yurtle Turtle <yurtle_t at yahoo.com>
> Subject: Re: [TCML] Primary Coil Copper Saving Idea
> To: "Tesla Coil Mailing List" <tesla at pupman.com>
> Date: Saturday, February 28, 2009, 8:43 PM
> Raw and finished copper is WAY lower than it was just a few
> short years ago. In fact, it's lower than it's been
> in quite some time. We're stockpiling cable and
> transformers like mad for several of our projects at work.
> There's a real good chance that commodities will only go
> up, as stimulus/pork (take your pick) money starts getting
> spent. I don't think we'll hit the highs we saw just
> a few years ago, but if you think you may want to buy
> copper, now may be the time.
> --- On Sat, 2/28/09, ConorPerry at comcast.net
> <ConorPerry at comcast.net> wrote:
> > From: ConorPerry at comcast.net
> <ConorPerry at comcast.net>
> > Subject: [TCML] Primary Coil Copper Saving Idea
> > To: "Tesla Coil Mailing List"
> <tesla at pupman.com>
> > Date: Saturday, February 28, 2009, 6:31 PM
> > With the price of raw and finished copper still pretty
> > I've struggled with the idea spending so much on
> my next
> > coil. An idea struck me (that's probably not
> > Why not use standard wire for the main section of the
> > primary coil, then switch to copper plumbing pipe only
> > through the tuning region? I've got various large
> > high-quality left overs from other projects. Without
> > measuring I'd guess that 4 gauge is a bit small,
> but 2
> > gauge and larger might work. The wire would be more
> > flexible and might require more support to maintain a
> > radius.
> > What'cha think?
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