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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Anyone Use a Multiplaz?
Looks interesting but the web site is a little short on details.
http://www.multiplaz.com/ Laurie Forbes |
#2
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
On Fri, 18 Mar 2011 20:35:59 -0600, Laurie Forbes
wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Nope. Cool tool, Festering price. -- "A patriot must always be ready to defend his country against his government." --Edward Abbey |
#3
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
On Fri, 18 Mar 2011 19:52:20 -0700, Larry Jaques
wrote: On Fri, 18 Mar 2011 20:35:59 -0600, Laurie Forbes wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Nope. Cool tool, Festering price. Ditto. I hadn't heard of it. Claims seem a bit extravagent. Could be true, but I smell a rat. Karl |
#4
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Anyone Use a Multiplaz?
Joseph Gwinn wrote:
In , Laurie wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Typical information-free site for sure. Pretty, though. The key is to use steam as the working fluid in what is essentially a TIG torch. They claim steam or steam+alcohol to be almost as good as argon, and a lot cheaper. I was able to find the US patents, having gleaned the names of the inventors from their awards: 6,156,994; 6,087,616; 5,719,370; and 5,609,777. How very intriguing! Chem E's, a little help please? Would it be more proper to say that the water+alcohol mixture changes state from liquid to steam to hydrogen + oxygen gas to plasma in the torch head, (rather than from liquid to steam)? I suspect the alcohol just lowers the vapor pressure of the mixture, yes? ...Though I admit the inventor curiously claims "Plasma Steam" in 5,719,370 and 5,609,777. --Winston |
#5
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
On 3/19/2011 10:36 AM, Winston wrote:
Joseph Gwinn wrote: In , Laurie wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Typical information-free site for sure. Pretty, though. The key is to use steam as the working fluid in what is essentially a TIG torch. They claim steam or steam+alcohol to be almost as good as argon, and a lot cheaper. I was able to find the US patents, having gleaned the names of the inventors from their awards: 6,156,994; 6,087,616; 5,719,370; and 5,609,777. How very intriguing! Chem E's, a little help please? I'm a Chem Eng (retired) but not sure I can comment with any great authority. However: Would it be more proper to say that the water+alcohol mixture changes state from liquid to steam to hydrogen + oxygen gas to plasma in the torch head, (rather than from liquid to steam)? I suspect that is what's happening. The plasma disassociates the water into H2 & O2 which then recombine to deposit heat energy at the work piece. This would be something similar to an "atomic" oxy-hydrogen torch in which H2 gas is disassociated by a plasma into elemental (atomic) H which then recombines in a similar fashion producing a higher temperature than oxygen/hydrogen alone. I suspect the alcohol just lowers the vapor pressure of the mixture, yes? Alcohol would reduce the vapour pressure but it's hard to say what role it would actually play. Maybe it simply provides a source CO2 to act as a shield or maybe it acts as a reducing agent to take up any stray O2 around the weld Laurie Forbes ..Though I admit the inventor curiously claims "Plasma Steam" in 5,719,370 and 5,609,777. --Winston |
#6
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
In article ,
Laurie Forbes wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Typical information-free site for sure. Pretty, though. The key is to use steam as the working fluid in what is essentially a TIG torch. They claim steam or steam+alcohol to be almost as good as argon, and a lot cheaper. I was able to find the US patents, having gleaned the names of the inventors from their awards: 6,156,994; 6,087,616; 5,719,370; and 5,609,777. Joe Gwinn |
#7
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
Laurie Forbes wrote:
(...) I suspect that is what's happening. The plasma disassociates the water into H2 & O2 which then recombine to deposit heat energy at the work piece. This would be something similar to an "atomic" oxy-hydrogen torch in which H2 gas is disassociated by a plasma into elemental (atomic) H which then recombines in a similar fashion producing a higher temperature than oxygen/hydrogen alone. I suspect the alcohol just lowers the vapor pressure of the mixture, yes? Alcohol would reduce the vapour pressure but it's hard to say what role it would actually play. Maybe it simply provides a source CO2 to act as a shield or maybe it acts as a reducing agent to take up any stray O2 around the weld Laurie Forbes Interesting! Thank you sir. --Winston |
#8
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Anyone Use a Multiplaz?
On Sat, 19 Mar 2011 10:12:11 -0700 (PDT), KD7HB
wrote: Interesting. However, nothing much on the company itself. Finally tracked down reference to being a Swedish company. Makes one wonder why the secrecy! Swedish, eh? Saaaaaaay, aren't they the folks who gave Barry a freakin' Nobel Peace Prize? -- "A patriot must always be ready to defend his country against his government." --Edward Abbey |
#9
Posted to rec.crafts.metalworking
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Anyone Use a Multiplaz?
On 3/19/2011 11:36 AM, Winston wrote: Joseph Gwinn wrote: In , Laurie wrote: Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Typical information-free site for sure. Pretty, though. The key is to use steam as the working fluid in what is essentially a TIG torch. They claim steam or steam+alcohol to be almost as good as argon, and a lot cheaper. I was able to find the US patents, having gleaned the names of the inventors from their awards: 6,156,994; 6,087,616; 5,719,370; and 5,609,777. How very intriguing! Chem E's, a little help please? Would it be more proper to say that the water+alcohol mixture changes state from liquid to steam to hydrogen + oxygen gas to plasma in the torch head, (rather than from liquid to steam)? I suspect the alcohol just lowers the vapor pressure of the mixture, yes? ..Though I admit the inventor curiously claims "Plasma Steam" in 5,719,370 and 5,609,777. --Winston Maybe the alcohol consumes the water - e.g. if water - surround it - make it burnable or not inert. Something like the add to gasoline solution that absorbs the water - and allows the engine to burn or pass it without chilling the engine. Martin |
#10
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Anyone Use a Multiplaz?
"Laurie Forbes" wrote in message ... Looks interesting but the web site is a little short on details. http://www.multiplaz.com/ Laurie Forbes Interesting. There are a few videos on the web: http://www.google.com/search?q=Multi...c&hl=en& aq=f It looks precise and SLOW. |
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