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  1. #16
    Join Date
    Jul 2005
    Location
    Flinders Shellharbour
    Posts
    5,693

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    ,

    I have built a hand piece and am acquiring some wire and then I'll take it down to the Radio Club , and we will work out what power we need to work it efficiently.

    I am looking at using a computer power supply , as there are several power outlets varying from 5volts at 20amps to 12 volts at 10amps. We can then build a power regulator and rheostat control.
    Jeff , With all the possible variations available on your unit its bound to work. Mine is going fine, although everything forward of the ceramic connector gets hot.
    Inspiration exists, but it has to find you working. — Pablo Picasso


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  3. #17
    Join Date
    Sep 2011
    Location
    kallangur qld
    Posts
    1,074

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    Hughie,
    Here is a couple of Pic's of the home made hand piece, cable is 4mmsq that will handle 10amps at12 volts, and the connectors are solid brass , epoxied into the handle,.with a timber plug in the center, and the wires are soldered into the connectors inside.

    All have been hand made , I have a small Model Makers LATHE, and can fabricate most bits I need.

    Jeff

  4. #18
    Join Date
    Sep 2011
    Location
    kallangur qld
    Posts
    1,074

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    I have been working on building my own control box (power ) , with another member of the RADIO Club, .

    A computer power supply has multiple power outlets , from 5volts @ 18amps to 12 volts @ 10amps

    Most commercial machines are using low voltage 2.2VAC @10Amps max, . This can be achieved with a computer power supply , and a small circuit board , which will drop the voltage and regulate the Amps to the hand piece.

    Cost involved :
    1 power supply $0- $60.00
    2 hand piece $35.00
    3 Circuit board & parts $25.00

    Total cost should work out about $120.00, There is a unit being made by a gentleman in Brisbane for $160, however the unit I am planning will control 2 hand pieces on independent controls.

  5. #19
    Join Date
    Jul 2005
    Location
    Flinders Shellharbour
    Posts
    5,693

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    Most commercial machines are using low voltage 2.2VAC @10Amps max, . This can be achieved with a computer power supply , and a small circuit board , which will drop the voltage and regulate the Amps to the hand piece.

    Cost involved :
    1 power supply $0- $60.00
    2 hand piece $35.00
    3 Circuit board & parts $25.00

    Total cost should work out about $120.00, There is a unit being made by a gentleman in Brisbane for $160, however the unit I am planning will control 2 hand pieces on independent controls.
    [/QUOTE]

    Still a good price though, mine is not so well regulated and I do get heat build up. So I have had to go to a ceramic connection block plus a few other small mods to keep the heat away from the plastic handle.
    Inspiration exists, but it has to find you working. — Pablo Picasso


  6. #20
    Join Date
    Aug 2010
    Location
    Wattle Glen Vic
    Posts
    116

    Default

    Quote Originally Posted by vk4 View Post
    I have been working on building my own control box (power ) , with another member of the RADIO Club, .

    A computer power supply has multiple power outlets , from 5volts @ 18amps to 12 volts @ 10amps

    Most commercial machines are using low voltage 2.2VAC @10Amps max, . This can be achieved with a computer power supply , and a small circuit board , which will drop the voltage and regulate the Amps to the hand piece.

    Cost involved :
    1 power supply $0- $60.00
    2 hand piece $35.00
    3 Circuit board & parts $25.00

    Total cost should work out about $120.00, There is a unit being made by a gentleman in Brisbane for $160, however the unit I am planning will control 2 hand pieces on independent controls.
    For a extra $70 you could get a good quality new unit but miss out on the "i made it myself satisfaction"

  7. #21
    Join Date
    Sep 2011
    Location
    kallangur qld
    Posts
    1,074

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    Yes I agree , but the buy it now unit will only control 1 hand piece , The unit i am building will control 2 hand pieces with their own control.

    not a $70.00 saving , but a $230.00 saving , plus satisfaction of building myself.

    Jeff

  8. #22
    Join Date
    Sep 2011
    Location
    kallangur qld
    Posts
    1,074

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    I have just repaired a pyrography tool , for my club, the lead to the pen , had a broken wire,.

    While I had It I looked at the Innards, what a shock, all the box contained were
    1 transformer
    2 2 terminal blocks ( connect wires )
    3 a high capacity dimmer unit
    5 warning light

    There is not even a fuse in the circuit, yet we pay big dollars for these tools,
    the transformer the largest part is worth all of $25.00at an electronics supplier,

    I have been given several computer power supplies all which have sufficient out put to run 2 hand pieces simultaneously , the project is ongoing.

    Jeff

  9. #23
    Join Date
    Jun 2007
    Location
    North Of The Boarder
    Age
    68
    Posts
    16,794

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    well done like them

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