Engraving

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Thread: Engraving

  1. #11
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    Quote Originally Posted by stevenw1963 View Post
    I have a similar laser engraver and tried it on a pale green acrylic, the acrylic was engraved, on 100%, but it couldn't be seen.
    You do have to ''fill in'' the engraving lines as unlike the wood etc, the laser doesn't burn the acrylic.
    tried a bit of black polish (as that was what was at hand) and it highlighted the engraving very well, suppose you could try black paint and wipe the excess off if you're quick.
    Hello Steven,

    The laser, as far as I can tell, just melts the acrylic and doesn't not vaporise it. This leaves a ridge around the engraving which has to be removed which effectively reducing the depth of cut. I have found it best to use a lower power i.e. approx 75 to 80% and repeat the cycle two, three or even four times. Also, if engraving black acrylic the surface is still too reflective and a matt finish or covering is still required.

    As Mark stated (AKA Flexi) masking tape should work although not tried it yet.

    Cheers,
    Frederick


     
     
  2. #12
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    Hi Frederick,

    Good results on the flat blank. I would be interested to see what it looks like on a turned to size piece of wood?

     
     
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  4. #13
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    To engrave a turned blank you need a rotary table to rotate the blank so as to keep the focal length of the laser. I have one which was made by a friend but am unable at this time to show it on here as I’m moving stuff about & it is boxed up & is in limbo until I get sorted. There’s a guy in Os who makes & sells them. You can see them on YouTube. I hope this helps.
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  6. #14
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    Quote Originally Posted by Paul hd View Post
    Hi Frederick,

    Good results on the flat blank. I would be interested to see what it looks like on a turned to size piece of wood?
    Hi Paul

    I have not had any problems engraving on circular wood. I know that the focal point changes but it doesn't seem to matter. On a larger radius then I suppose it would. I don't have any pictures yet but will post some when I next play around with it.

    Cheers
    Frederick

     
     
  7. #15
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    Quote Originally Posted by Bill Mooney View Post
    To engrave a turned blank you need a rotary table to rotate the blank so as to keep the focal length of the laser. I have one which was made by a friend but am unable at this time to show it on here as Iím moving stuff about & it is boxed up & is in limbo until I get sorted. Thereís a guy in Os who makes & sells them. You can see them on YouTube. I hope this helps.
    Hello Bill

    Thanks for this. I have tried it on slimline/streamline etc and it seems to do OK. What you say is correct and the focal length changes but if the writing is small enough and the circular blank is large enough, I have got away with it. I have tried Acrylic but not wood as yet.

    Cheers
    Frederick

     
     
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    Quote Originally Posted by Frederick View Post
    Hi Paul

    I have not had any problems engraving on circular wood. I know that the focal point changes but it doesn't seem to matter. On a larger radius then I suppose it would. I don't have any pictures yet but will post some when I next play around with it.

    Cheers
    Frederick
    Thanks Frederick,
    I look forward to the pics.

     
     
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  11. #17
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    Engraving on round blanks

    I tried this today and I don't think the curved surface made that much difference. Soft wood 10mm dia.

    20191208_215031.jpg

    It does the job, unfortunately I am now hooked on engaving my own pens that I make. Down the rabbit hole I fall

    Which way will this one come out? Who knows...........

    Cheers
    Frederick

    It's the correct way up Different camera this time.

     
     
  12. #18
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    Looks spot on, you done well.

    Quote Originally Posted by Frederick View Post
    I

    Which way will this one come out? Who knows...........

    Cheers
    Frederick

    It's the correct way up Different camera this time.
    Halfway, trying to keep both us Aussies and you poms happy.

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  14. #19
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    Quote Originally Posted by Frederick View Post
    I tried this today and I don't think the curved surface made that much difference. Soft wood 10mm dia.

    It does the job, unfortunately I am now hooked on engaving my own pens that I make.
    Hi Frederick,

    That looks brilliant. I think I will have to get one of these.

     
     
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  16. #20
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    Quote Originally Posted by Paul hd View Post
    Hi Frederick,

    That looks brilliant. I think I will have to get one of these.

    If you do buy one then it is my recommendation that you purchase at minimum the 1,5watt, 3watt would be better.

    Regards
    Frederick

     
     

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