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  1. #1
    Neuer Benutzer
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    What kind of file extension for image to be engraved into wood?

    I want to CNC images onto 12x12 & 12x24 wooden panels

    What kind of images do I need to provide to have this done? Are jpegs alright? What about the resolution? I imagine I want the best I can, but are there any specs?

    Or do these images need to be created in CAD?

  2. #2
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    Re: What kind of file extension for image to be engraved into wood?

    anyone?

    I want to engrave both sides of the wood, so I'm guessing if I'm using 3/4" I don't want more than 1/4" engraved each side. Is this deep enough relief to give me the right detail?

  3. #3
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    Re: What kind of file extension for image to be engraved into wood?

    Usually a CNC mill or router will require a .dxf file that will be converted to G-Code by a program such as SheetCam etc.
    This will be used by another program, Mach3 etc. that controls the actual cutting and operation of the machine.
    Larry

  4. #4
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    Re: What kind of file extension for image to be engraved into wood?

    Your probably looking for a program like PhotoVCarve or something along those lines.

    Adam,
    Gecko G540, Rack and Pinion Drives-X and A axis, 1/2-10 5 Start Acme-Z Axis
    4-THK HSR 25 Linear Slides, KL23H2100-35-4B, Power Supply-KL-600-48 48V

  5. #5
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    Re: What kind of file extension for image to be engraved into wood?

    Hmm ok I don't think the photocarv is what I"m looking for.

    If I have certain images/symbols in .jpeg or .png - can someone then convert it to the correct file to run on a CNC, or would they have to create the image/symbol from scratch?

  6. #6
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    Re: What kind of file extension for image to be engraved into wood?

    Do you have an example of what you're trying to carve? The appropriate file format and CAM to convert that to G-code depend very much upon that.

  7. #7
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    Re: What kind of file extension for image to be engraved into wood?

    Get the CamBam trial and see if it works for you.
    CamBam 1.0.0 documentation - Bitmaps

  8. #8

    Re: What kind of file extension for image to be engraved into wood?

    The normal process is to convert a raster image (jpg, png, bmp, etc.) to a vector format (dxf, or others) There are a number of free online converters up to professional software for doing this. Depending of the quality of the starting image the conversion may or may not require additional work to be useful for engraving. Once a vector format is generated, then it can be used to generate the G code needed to do the actual work on the CNC machine.

    A simple black & white line drawing converts well, converting an image that contains a lot of small detail is much more difficult. If you are going to hire someone to do the engraving, then I would send them sample images and get their opinion on the usefulness of the image.
    Jim Dawson
    Sandy, Oregon, USA

  9. #9
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    Re: What kind of file extension for image to be engraved into wood?

    As mentioned there are lots of free tools for conversion. The output really depends on the input. I've found You can usually get good results if you leave the image the same size or smaller, but as soon as you try to increase the size it looks horrible.

    But once you do have a vector file (I try to make the svg files) I use a free online converter to g-code MakerCam

  10. #10
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    Re: What kind of file extension for image to be engraved into wood?

    Thanks for the responses, I apologize for the delay.

    So most of what I want are images that I have as jpeg that are either 1600x1600 or 3500x3500 pixels

    They range from basic, to a bit more detailed on a few.

    What do you guys think?

    The last one titled Christen lamen is the most detailed, but on average it's the basic line drawings

    I'm looking to have them engraved on wood panels 20x20 inches

    Will I get high quality engraving from these images once converted for CNC?

    Also, are the vector images I'm used to associating with photoshop the same kind that are used for CNC? If so I could have someone convert them for me and then just need to find someone to convert them to the proper CNC file
    Attached Thumbnails Attached Thumbnails hexgram.jpg  

  11. #11
    Gold Member
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    Re: What kind of file extension for image to be engraved into wood?

    This would probably work better with a laser cutter than with a router. You won't have problems like grain lifting on the edges, and rounding of sharp interior corners. And lasers usually come with software that can read your JPG files and engrave them directly. If you don't own a laser cutter there are services which will do all this for you, on your wood panels. Here's one: https://www.ponoko.com/laser-engraving there are probably others that are local for you.
    Andrew Werby
    Website

  12. #12
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    Re: What kind of file extension for image to be engraved into wood?

    As I mentioned before, if you increase the size of a jpg, it will get grainy and you won't be happy with the output.

    If you google "Convert .jpg to G-Code" you will find tons of step by steps with free software.

    If you want to enlarge them you should redraw them in a vector based software package such as illustrator. If you plan to sell these, I would be worth it to hire a graphic designer to redraw these as vecotr based programs. You could probably find someone to do it on fiver.com for pretty cheap.

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