Hot Wire Build

Discussion in 'Lost foam casting' started by Al2O3, Oct 22, 2017.

  1. Jammer

    Jammer Silver Banner Member

    The length and diameter of wire determines the power you need. I have a 12 volt computer power supply that I control with a variable resistor. I'm just using some 30 awg craft wire, no sure what it's made of, it lasts for quite a while and then snaps. Like shoelaces it breaks at the worst time. I'm going to pick up some Kanthal at the local vape shop. I did a video of mine back in 2009, it's terrible. Been using the cutter a lot over the years. I might make a new video.
     
  2. Wader

    Wader Copper

    I did this with a wire cutter with no dimmer switch. And kelly was right, if you slow down at all it just makes a big void at that spot. I'm thinking if I get a decent power supply with a dimmer switch, and use a motorized rotary table, I think I could get the correct speed and wire temperature to make a much better cut.
     

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  3. Al2O3

    Al2O3 Administrator Staff Member Banner Member

    All you need is a small transformer. Doesn't need to be DC, just <12v for safety and appropriate gage resistance wire. Diimer upstream of transormer of course.

    Best,
    Kelly
     

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