|Jul 17, 2001, 01:23 PM|
Seattle, WA USA
Joined Jun 2000
Computer Power supply for Foam Cutting?
Anyone ever use one? I'm kicking around the idea of a poly-hydral, white foam and tape speed 400 trainer for my son. I'd like to do it as cheaply as possible and have many computer power supplies available due to my job. I would think that 250 watts and 12.6 volts should work, but?
|Jul 17, 2001, 03:11 PM|
Joined Jun 2001
Computer Power Supplies work fine.
I use one to successfully cut foam.
I have found that 0.016" Guitar wire gives a good temperature for cutting foam. I have also tried 0.010" wire but doesn't work as well as it has a higher resistance therefore doesn't get as hot. The Guitar wire is approx. 3' long.
I actually have two pieces of guitar wire and use one for tensioning and also as a variable resistance. Just connect an aligator clip on the wire and slide it along to change the cutting temperature.
ans ASCII drawing of the bow
The * characters represent the wooden frame.
Tension wire is connected to a small turn buckle for tightening the cutting wire.
hope the info will help you.
|Jul 17, 2001, 11:55 PM|
but doesn't work as well as it has a higher resistance therefore doesn't get as hot.
actually the resistance is what makes it hot in the first place. if you were to use a superconductor it would prolly never get hot...hehehe.
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