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Project help

I would like to cut some two inch thick styrofoam for an audio project.I started with a wire saw and it not only was a mess but the cut looked terrible.My next thought was to make a wire saw(so-to-speak).This one was to be powered by ac or dc.The wire would heat up and I could cut without the mess.I tryed by using a battery and it heated up the battery and scared the heck out of me.I made the saw out of some four layer plywood with handles and I can apply tension to the wire with a mechanism on the back of the saw.It looks cool but sits cold.Help.
kgveteran

Showing 1 response by john_3146279c

john_3146279c
2 posts
 
The copper wire's resistance was probably too low for the battery. Use what Rives suggested.

Be careful with the variac. Most of them are not isolation tranformers, so your wire "blade" and its associated wiring will be electrically "hot". Touching it and a ground simultaneously would be very unsafe.
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