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Plasma cutting table

Discussion in 'Laser Cutters' started by mytechno3d, Jun 9, 2016.

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  1. mytechno3d

    mytechno3d Master
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    mytechno3d published a new build:

    Read more about this build...
     
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  2. Mark Carew

    Mark Carew OpenBuilds Team
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    This is great @mytechno3d can't wait to see more! I really like the floating Z head concept, nice Build :thumbsup:
    BTW I have to ask, what would it take to get that V-Slot plate? We have a display shelf here at OpenBuild HQ for OpenBuilds 1st and this would look great on there.
     
  3. mytechno3d

    mytechno3d Master
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    Hello , i can send it to you for the price of the shipping cost.
    Perhaps do you prefer a plate with your openbuilds signs ?
     
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  4. mytechno3d

    mytechno3d Master
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    Water pan is really helpfull on this build ,it absorbs the toxic fumes and splash molten steel
     
  5. Mark Carew

    Mark Carew OpenBuilds Team
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    @mytechno3d That's great news! Which ever you choose but I do like the idea of the OpenBuilds logo too that would look cool! we will be more then happy to pay any shipping charges. It will be displayed proudly at OpenBuilds HQ and we thank you. :thumbsup:
    Please let us know the final cost [email protected] and will take care of it.
     
  6. pizzaman85

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    that is a really great looking machine, will there be any design file for this build
     
  7. mytechno3d

    mytechno3d Master
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    Hello Pizzaman85 , yes i will post specifics files for this build . I' m started today with "bent blade comb.dxf " ( sorry , maybe it is not the right name but my english is a bit limited ;) )
     
  8. pizzaman85

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    Thank You. Cant wait to see them.
     
  9. mytechno3d

    mytechno3d Master
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    Hello Mark , your Openbuilds sign is ready :) , i will paint it and send it to you .
    You can see the cut here :
     
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  10. Mark Carew

    Mark Carew OpenBuilds Team
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    You rock bro! This is so cool to watch cut. Thank you :thumbsup:
     
  11. carbonlife

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    I love this build, would you happen to have a BOM for this project? Thank you! And thanks for sharing this :)

    Steve
     
  12. silopolis

    silopolis Well-Known
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    Splendid build !
    Can't wait to study the design and BoM...
     
  13. slm222

    slm222 Well-Known
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    during the cut, im assuming the reason for the floating torch holder, does the plasma torch tip ride on the piece of metal? it has been some years since I used one. does the torch need to stay in contact with the cutting material or does it need to be slightly above the material? sorry my brain is fried, so the wording of my question may not be clear.
     
  14. Kyo

    Kyo Master
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    Not being familiar with plasma, I to would like to learn more about the floating head.
     
  15. ghostmaker1

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    This might be the coolest project I've seen for quite a while! Nice work sir! I look forward to more postings (as there is a plasma cutter somewhere in my future).
     
  16. Jan Hoekstra

    Jan Hoekstra Well-Known
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    first of all, you made a very nice machine! I 'm working on a similar machine. So, I'm curious about what software are you using?
     
  17. mytechno3d

    mytechno3d Master
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    Hello
    Sorry for my late answer ...
    The only reason of the floating torch holder is to set 0 on Z axis , you activate the endstop and go up for xx mm ( depend of the position of your endstop ) , this way your torch is just on metal sheet regardless of thickness .
    During cutting operation , torch is around 1.5 mm above the metal sheet .
    The cutting distance is very important for the quality of your cut .
     
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  18. mytechno3d

    mytechno3d Master
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    Hello
    I use autocad ( or other like illustrator , skecthup .. ) to create parts , sheetcam to create g-code ans mach3 to control the machine .
     
  19. slm222

    slm222 Well-Known
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    Great info. With that software can you account for the plasma path to cut on the inside or outside of the design respectively?
     
    #19 slm222, Aug 5, 2016
    Last edited: Aug 5, 2016
  20. mytechno3d

    mytechno3d Master
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    This is done with Sheetcam , you can define "inside" , "outside" or "on" the path , just like Vectrics or cambam
     
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  21. petere101

    petere101 Well-Known
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    My first machine is going to be plasma. I'm half way through the BOM for a complete custom build. I'm a bit lost as to how to connect a THC to the plasma voltage if there is no connections brought out. Can anybody help?
    Thanks

    Pete
     
  22. mytechno3d

    mytechno3d Master
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    Hello
    It really depend of the brand of your plasma .
    On mine , there is 2 way to do the THC connection .
    1 / using a plug on the back side of my hyperterm .( with 1/50 scale )
    2 / Directly on the row voltage of the arc

    I try both , i had some trouble with de 1/50 divider ( voltage was not correct ) so i 'm now using the raw valu of the arc and it is much better .
    I'm using a low cost THC , a Proma THC SD
    [​IMG]
    [​IMG]
    [​IMG]
    I hope that can help you
     
  23. petere101

    petere101 Well-Known
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    Thankyou for your very concise reply!

    In the diagram above, the direct connection is to the 2 outer points of the Proma. Obviously, the main cables still go to the torch head. So, how do you get the 2 extra wires inside the connection? Is there an adapter that screws in between? Or, do you cut back a bit of the screen off the cables?

    Thanks
    Pete
     
  24. mytechno3d

    mytechno3d Master
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    It really depend of your plasma . On mine i had to drill the enclosure and make a connection on the electronic board .
     
  25. petere101

    petere101 Well-Known
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    Thanks.
    Can I ask for some more info?
    What software and controller do you recommend for plasma cutting with THC?

    I've just been reading the cs-lab.eu website, and that stuff is impressive. You're both in the EU, have you tested this stuff?

    Pete
     
  26. Recklessford

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    What kind of accuracy have you been seeing? +/-
     
  27. Mark Carew

    Mark Carew OpenBuilds Team
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    Props go out to @mytechno3d for sending us this super awesome plasma cut OpenBuilds Logo!
    This is going on the shelf of first :thumbsup:
    Thank you!
    OpenBuilds Plasma Cut.jpg
     
  28. mytechno3d

    mytechno3d Master
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    Than you mark for this nice picture . :thumbsup:
     
  29. mytechno3d

    mytechno3d Master
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    It depends of the thickness of the metal sheet .
    I usually get an accuracy between 0.4 mm and 0.8mm
     
  30. Redneck darrell

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    Sorry I'm new here but confused what is a THC ? I'm looking at a plasma build and I can't figure out how to wire the plasma to the cnc. Great build I'm impressed.
     

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