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DIY hotwire cutter for styrofoam shaping

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Uploaded by on Jan 29, 2007

When I needed to quickly shape the Styrofoam blocks on my custom built car I built my own hotwire out of an old battery charger, some scrap wood and a piece of niChrome wire from the hobby shop.

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Uploader Comments (sgraber)

  • i wonder if it can cut a finger off..

  • I think it will just burn the flesh, not cut through the bone. I think the fumes would be more dangerous.

  • Its just a mold!! then he will fiberglass over it. He has a huge website showing how he did it all. BTW GREAT car man!!

  • Thanks Bob. Of course you're absolutely right. You can look at the video responses posted above or search my username sgraber to see more videos. I've actually pretty much finished the car and it is street legal. Very quick and very fun.

Top Comments

  • yes, this is incredibly useful... The quickest and cleanest way to cut styrofoam i know...

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All Comments (78)

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  • touching it would not kill you. would heart tho

  • absolutely brilliant idea on an AC power to DC power source alternative! i've been adapting rheostats or converting clunky DC regulators that restrict movement. Question: can one reuse old piano wire or guitar string for the hotwire or is nichrome the only way to go? Thanks for the tip

  • what amps and volts is this set to?

  • Very nice. Never thought about the battery charger.

  • i have a question :

    1 : is it DIY hot wire ?

    2 : after you turned it off, is the jolts / heat still there ? or they instantly dissapear ?

    sorry for my english bro

  • you can use a 6v battery..

  • @j0xIWsNt its 10amps.. touch it and die

  • what kind of battery charger a car bettery charger?

  • Nice project! Thanks for the info.

  • @PtrOBrn no you would want to use a thing such as a EZE foam cutter

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