how to use a plasma cutter

  1. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    hi everyone
    i hope this is in the right place to ask for help, i have ordered a 40amp draper plasma cutter and just wanted some advice on how best to use it and if there was any rough guide on what amps will cut what thickness and any other usefull info anyone has to get the best from it.
    its the one with the bmw lookin grill in the front of it :laughing:

    regards

    james
     
  2. CoValent

    CoValent Member

    Messages:
    155
    Location:
    Limerick, Ireland


    I think this is a pretty good video to show the basics.
     
  3. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    thankyou :thumbup:
     
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  4. gaz1

    gaz1 Member

    Messages:
    7,850
    Location:
    westyorkshire
    for cut50

    as a guide i asked skotl for some info

    TBH, I set the air at about 65psi and never touch it after that.

    12 mm would be at 50A
    8mm at 30A
    6mm at 20A
    3mm at 15A

    my advice play with it and learn each thickness as best as you can or get on with whats needed as goes for liking it glad i bought one myself i do like them

    if you havent got consumables then get some in as there cheap enough to get imported at that from rivers shop on ebay and you get plenty of them

    ive got extended ones there better to use as well

    3mm you can move pretty quick 6mm slower and slower still for thicker stuff

    ive posted enough youtube videos of how toos on the cut50 plasma reference
     
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  5. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    good idea on the consumables i will order some
    thanks
     
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  6. earthman Member

    Messages:
    632
    One day I'd like to get one,...thanks for the video.:)
     
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  7. Paul.

    Paul. Moderator Staff Member

    Messages:
    6,004
    Location:
    Northampton. UK
  8. gaz1

    gaz1 Member

    Messages:
    7,850
    Location:
    westyorkshire
    i didnt want but i bought one and really like it ive kept it
     
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  9. CoValent

    CoValent Member

    Messages:
    155
    Location:
    Limerick, Ireland
    I just gave mine a little scratch behind the ears and it followed me home. :rolleyes:
     
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  10. fizzy Forum Supporter

    Messages:
    4,369
    uk
    I really don't like my cut 40 or 50. Rough finish on thicker steel.
    I much prefer my Startrite 24" vertical bandsaw. Cutting 15mm steel earlier no problem at all with a lovely smooth finish,
     
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  11. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    all well and good if you have the space but i dont
     
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  12. fizzy Forum Supporter

    Messages:
    4,369
    uk
    Yes it is a big beast.
    In fairness I am sure the plasma cutter is fine on thinner sheet metal. And my technique probably leaves a lot to be desired!
     
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  13. slim_boy_fat

    slim_boy_fat Forum Supporter

    @james butler I've not used mine much yet, but I found it helpful to cut 'templates' from suitable thickness ply as guides when cutting circles etc. Better than a shaky hand......:whistle:
     
  14. CoValent

    CoValent Member

    Messages:
    155
    Location:
    Limerick, Ireland
    I've made a few templates for little jobs as well, usually a bit of 12mm ply cut with a router and jigsaw. If you use ply, be prepared to put fires out. A lot. :D
     
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  15. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    oooo thats a good idea, that chap in the videos metal strip with holes in was a good idea too for cutting circles, kinda reminded my of a spirograph template :clapping:
     
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  16. pondy

    pondy Forum Supporter

    Messages:
    1,467
    Location:
    chedburgh, suffolk. uk
    I never really adjusted my plasma cutter (30a r tech)

    The air pressure is set to 55psi I think and stays at that. As for amps, if I'm cutting think sheet, 1mm or so ill use a lower ampage, anything else I just have it set to 30a and have no issues
     
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  17. james butler

    james butler Member

    Messages:
    1,198
    Location:
    birmingham england
    got round to using the cutter today and was a lot of fun!!!!:laughing:
    did some trial cuts on some 2mm and 6mm steel no real issues although it seemed to struggle on the 6mm untill i realised the nozzle was loose :doh:
    so tightened it back up and got a lot better but only had a pic of the first time round
     
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    • IMG_1449[1].JPG
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  18. gaz1

    gaz1 Member

    Messages:
    7,850
    Location:
    westyorkshire
    many more times to play with it enjoy using it

    how do you rate it though
     
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  19. stuvy

    stuvy Member

    Are you using angle or plate as a guide?
     
  20. Shedendman

    Shedendman Member

    Messages:
    3,450
    east sussex
    And the grinder will still come out;)
     
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