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Thread: cnc picture test

  1. #1
    Join Date
    Dec 2008
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    falcon heights, minnesota
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    5,604

    cnc picture test

    here we go again kids! back into the realm of photovcarve. this is a test of a pic of the pastor's daughter, and her favorite stuffed toy. the blanks are cherry, with several coats of sanding sealer on them. we then have the end results, and with the stain applied. now i have to wait for the stain to dry entirely, then a quick rub with 220, and see what happens.
    Attached Thumbnails Attached Thumbnails merari 1.jpg   002 test blanks.jpg   003 test started.jpg   004 test blank finished.jpg   005 test blank with gel stain.jpg  

    benedictione omnes bene

    www.burroviejowoodworking.com

    check out my etsy store, buroviejowoodworking

  2. #2
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    Feb 2008
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    East Freeetown, Massachusetts
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    Dan, you sure do have some pretty wood.

  3. #3
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    Dec 2008
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    falcon heights, minnesota
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    well, after waiting for the stain to finish drying, gave it a bit of a rub with 220. all i can say, is that the results are pretty disappointing. at least the toy dog managed to show up.
    Attached Thumbnails Attached Thumbnails 006 after sanding.jpg  
    benedictione omnes bene

    www.burroviejowoodworking.com

    check out my etsy store, buroviejowoodworking

  4. #4
    Join Date
    Jul 2015
    Location
    Tahlequah, OK
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    272
    I'm thinking photovcarve is good for lithophanes or photos in wood that are/need extensive coloring during staining. The latter is beyond my abilities so I'll stick to litho's with PVC at least for now.

    Have you considered/used halftoner? I really think it's the tool for the product you're looking for.

  5. #5
    Join Date
    May 2007
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    Thomasville, GA
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    When you consider that other folks are getting results like the following with PVC, it bears reading what they do.

    Click image for larger version. 

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    Link to thread.

    I'm not there yet but I'm reading what those folks say.
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member and Member of Mensa
    My Weather Underground station

  6. #6
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    Feb 2008
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    Yeah - there is a way to do it.

    Unfortunately, I have nothing to offer.

    I bought it, but only used it once. My machine at that time was NOT 3D capable, and I was not successful at PVC.

    I have not used it since 2007.

    I have seen a lot of good results though.

  7. #7
    Join Date
    Jul 2015
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    Tahlequah, OK
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    Quote Originally Posted by Bill Arnold View Post
    When you consider that other folks are getting results like the following with PVC, it bears reading what they do.

    Click image for larger version. 

Name:	BuckClock.jpg 
Views:	28 
Size:	58.3 KB 
ID:	92651

    Link to thread.

    I'm not there yet but I'm reading what those folks say.
    You're right Bill, this is beautiful work. It requires extensive photo editing before importing and then some pretty extensive finishing technique. It's worth it but for me for now I need something easier to keep from getting discouraged!

  8. #8
    Join Date
    May 2007
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    Quote Originally Posted by Leo Voisine View Post
    ... My machine at that time was NOT 3D capable, and I was not successful at PVC. ...
    If one has a CNC machine with X, Y and Z coordinates, why is it not 2.5D or 3D capable?
    Bill Arnold
    Citizen of Texas residing in Georgia.
    NRA Life Member and Member of Mensa
    My Weather Underground station

  9. #9
    Join Date
    Aug 2007
    Location
    Reno NV
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    13,353
    I've been playing around with my laser this weekend and the one thing I can tell you is I don't think you can take a picture 'as is' and put it into any software and expect it to work very well.

    You are basically taking a color picture with a large number of R, G, B, and Brightness variables and trying to convert that into an X,Y, and Z value, or in my case, a laser power value.

    What I've been doing is to convert the picture to gray scale and adjusting the contrast and brightness variables to try and 'imagine' what the results will look like.

    I'd suggest popping the picture into some editing software and playing with it a bit and THEN loading it into Photocarve to generate the gcode.

    At least it looks like the machine is behaving nicely now and not digging into the work.

    I can't tell you how many experiments I've been working on. I'll make a post on things after I get a successful image to show for myself.
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  10. #10
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    Quote Originally Posted by Bill Arnold View Post
    If one has a CNC machine with X, Y and Z coordinates, why is it not 2.5D or 3D capable?
    I believe the problem was the BOB and/or controller software he had at the time. He later switched that out and went to Mach3 and all the capability was opened up then. There are machines out there that have some pretty weird limitations (like being able to only handle driving one or two axes at a time, for example).
    Jason Beam
    Sacramento, CA

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