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Type: Posts; User: Romos V.

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  1. Replies
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    Yes, from ebay. Check your P.M. Romos

    Yes, from ebay. Check your P.M.

    Romos
  2. Replies
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    I bought one last month, for $19.99 :) Romos.

    I bought one last month, for $19.99 :)

    Romos.
  3. Replies
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    The only problem is the RF power supply which is...

    The only problem is the RF power supply which is not included.

    Romos
  4. Thread: Cutting tip

    by Romos V.
    Replies
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    667

    I don't know if cut quality is better when the...

    I don't know if cut quality is better when the metal have some temperature, because usually I cut stainless steel letters 1mm thickness for sign makers.

    Romos
  5. Thread: Cutting tip

    by Romos V.
    Replies
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    667

    What kind of metal and what thickness ? Romos

    What kind of metal and what thickness ?

    Romos
  6. Replies
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    I use pure acetone and Johnson's cotton buds.

    I use pure acetone and Johnson's cotton buds.
  7. Replies
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    Yes. Many software can do this.

    Yes.
    Many software can do this.
  8. Replies
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    This is normal. To cut a clean part, use in...

    This is normal.
    To cut a clean part, use in your file, Lead in/out.
  9. Replies
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    1,487

    Check this link for varius materials for laser...

    Check this link for varius materials for laser cutting.

    http://www.franeklaser.com/laser-cutting-applications.htm
  10. Replies
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    Owen, :) Welcome to the club :) :cheers: ...

    Owen,

    :) Welcome to the club :)
    :cheers:

    Romos
  11. Replies
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    I cut with 2-3 bar. Don't try more than 4 bar....

    I cut with 2-3 bar.
    Don't try more than 4 bar. There is a possibility to break the lens.
  12. Replies
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    watching and listening the test1.avi everything...

    watching and listening the test1.avi everything looks OK.
    I listen frequency 1-2 Khz.

    I thing that the problem is the oxygen pressure.
  13. Replies
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    >...

    << Does the pressure make a lot of difference? >>
    SURE Try with 2-4 bar.

    By moving the sheet with your hand, you don't have stable speed.

    One other question.
    What was the frequency and duty...
  14. Replies
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    Owen, I make the pictures. What was the...

    Owen,

    I make the pictures.

    What was the thickness of the metal?
    What was oxygen pressure?
    What was the cutting speed?
  15. Replies
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    Owen, Are you sure that your beam is centered?...

    Owen,

    Are you sure that your beam is centered?
    If not, a part of the beam will reflect in the nozzle creating a secondary beam.
    You can see it if you make short shootings on a clear acrylic.
    ...
  16. Replies
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    Owen, 2mm distance between metal sheet and...

    Owen,

    2mm distance between metal sheet and nozzle is ok.
    Try with 3 bar oxygen pressure.
    Adjust the distance between nozzle and focusing spot (not nozzle and metal) at 3mm. (look the attachment)...
  17. Replies
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    1,487

    Owen, when I say lenses, I mean the ZnSe...

    Owen,

    when I say lenses, I mean the ZnSe focusing lenses only.( 1.5" and 2.5")
    They get dirty from the nozzle side and not from the sealed side.
    And you have to clean them regularly. If not,...
  18. Replies
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    1,487

    I don't have any filter at oxygen line, but I...

    I don't have any filter at oxygen line, but I clean my lenses every 2 weeks.

    Romos
  19. Replies
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    Case 2 (I don't have beam expander) lens...

    Case 2 (I don't have beam expander)

    lens distance from laser: 500mm
    focal length: 2.5"
    Material: Stainless steel 1mm, and acrylic 10mm

    Samples are 2 and 3cm height.

    There is some buildup...
  20. Replies
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    1,487

    Owen, I made some testing for you, and I took...

    Owen,

    I made some testing for you, and I took some pictures.

    Case 1 (I don't have beam expander)

    lens distance from laser: 500mm
    focal length: 1.5"
    Material: Stainless steel 2mm
  21. Replies
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    Owen, it will still reflect heat but bigger...

    Owen,

    it will still reflect heat but bigger gap will be better. Not only for the heat. When gap is small, small pieces from the melted metal will hit the aluminium plate, and they will go on the...
  22. Replies
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    Owen,

    Owen,

    <<(Please resist the temptation to post that 100 watters dont cut sheet metal -- they do). >>
    Actually, they don't....

    There are 4 kinds of Co2 laser.

    1) Continous wave (100w laser...
  23. Replies
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    Owen, for galvanized and carbon steel, the cut...

    Owen,

    for galvanized and carbon steel, the cut edges are smooth and clean.

    For Stainless steel, there is very little buildup of material on the back of the cut (not so much as plasma cutting),...
  24. Replies
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    Owen, It was difficult to find here honeycomb...

    Owen,

    It was difficult to find here honeycomb (I live in Cyprus), so I thought a simple solution. :)
    Aluminium angles L shape, 2 meter long, next each other. Something like this.... LLLLLLL. ...
  25. Replies
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    Yes, I bought all my optics from lasermech,...

    Yes, I bought all my optics from lasermech, except the Path Enclosure Tubes. (I make them on lathe).
    I don't remember what was the exact price, I have to find the invoice.

    Romos
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