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Bevel changes in Deltacad

Discussion in 'Software, Computers, CMC's Techie Stuff' started by paintbylight, Dec 31, 2017.

  1. paintbylight

    paintbylight Grumbler

    Hello All,

    As usual, I turn to this forum whenever I am stuck, and so far I have never been let down.

    I am hoping that someone can help me with a problem I am having with designing a mat in Deltacad. I have designed the mat and imported it as a dxf file into my F6100 but find two problems.

    1. The CMC does not cut one single line
    2. Some of the cuts are the correct bevel, but a few are a reverse bevel.
    3. The inner boxes are not being cut

    Really appreciate any help that some of the most experienced members can provide. I have attached the file to illustrate what the issue is.

    Thanks a lot in advance.

    Regards
    AJ

    P.S: Happy New Year to all the members on this forum.
     

    Attached Files:

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  2. Jim Miller

    Jim Miller SPFG, Supreme Picture Framing God

    I'm not familiar with Deltacad, but I have seen similar symptoms with files created in Corel Draw. When a shape will not cut at all, that generally means the shape is not closed. That is, at one or more intersections, the nodes at the ends of the lines are not "welded" together.

    If some individual lines are being cut with reverse bevels, that generally means the direction of those lines is reversed, as indicated by a small arrow seen at one point in the entity. The direction of a standard-bevel line may be right-to-left, and the direction of a reverse-bevel line may be left-to-right. Can you change the direction of individual lines? If so, then that would probably change the cutting direction.

    If your Deltacad design is assembled from individual lines and not completed (welded) shapes, then I guess there would be greater likelihood of unwelded-node intersections. In Corel Draw, I would construct that design using 11 ordinary rectangles precisely located, then join the outer rectangle to the inner rectangles by breaking those rectangles apart, pulling the nodes together as desired, and then welding the nodes at the intersections. The cutting procedure for my Valiani CMC would be to cut the five inner-most rectangles first, then the outer rectangle and the five smaller rectangles welded to it would be cut in a single operation.

    The PDF image doesn't reveal the construction properties of the entities. Could you attach a screen shot of the Deltacad screen image showing the nodes? Or, if you care to send me the DXF file or just the dimensions of the rectangles, I would be pleased to check or reconstruct the shape and send it back to you.

    Hope that helps. Nice design, by the way.
     
    Last edited: Jan 6, 2018
  3. Jim Miller

    Jim Miller SPFG, Supreme Picture Framing God

    While enjoying my morning coffee, I reconstructed your design in Corel Draw. The attached screen shot of an isolated area shows how the nodes are all "welded" in the corners, and each entity has a small arrow to indicate the direction, which would result in standard-bevel cuts. However, I'm guessing you would want to reverse the bevel on the outer-most entity, right?
     

    Attached Files:

    Last edited: Jan 6, 2018
    paintbylight likes this.
  4. paintbylight

    paintbylight Grumbler

    Hello Jim,

    Thank you very much for the reply. After experimenting and cutting a large number of mats, I did finally manage to get the design as I wanted. And during the process I learned many things on what to do and what not to do. And in the end it was exactly as you mentioned. There was one corner that wasn't connected and hence the uncut line. A lesson I won't forget quickly!

    And here is the final mat with the jersey in it.
     

    Attached Files:

  5. paintbylight

    paintbylight Grumbler

    Wow. Thanks a lot Jim. So much effort. You are truly a Framing God!

    One question, does Corel Draw allow to save files as dxf files?
     
  6. Jim Miller

    Jim Miller SPFG, Supreme Picture Framing God

    That's a very creative way to deal with the photos located on top of the jersey. Having made similar designs myself, here are a couple of cautions:

    1) Over time, the narrow-width bars connecting smaller windows to the big window (noticed you made them wider;)) could warp/flex/deform under gravitational stress, so it's a good idea to provide rigid support under that mat (1/8" foamboard or 4 mm Coroplast), and space it to rest against the glass.

    2) If this garment is highly collectible, make sure the owner understands that, over time, exposure to light could cause fading or discoloration, except under the overlay areas. You need to explain that UV filtering glass/acrylic provides the best protection, but visible light is harmful, too.

    Yes, but you have to select a compatible DXF version. In the usual file saving procedure, specify the file location (the folder in your CMC software for imported files,) key in the file name you want, and click on "Save as type", and you should get a dropdown list something like this; click on "DXF-AutoCAD":

    File SAving screen shot 1-7-18.jpg When you click "Save", you should get an "Export to AutoCAD" prompt something like this:

    Corel DXF Format Saves 1-7-18.jpg

    Then, click on the "Export Version" dropdown to get the list of DXF versions available:
    Save file-Select DXF Version.jpg

    In order to get it right, you will need to select the correct DXF version, and I suggest saving in the latest version that is compatible with your CMC's software. If you don't know which DXF version that is, consult your CMC maker. I believe it depends on the version of your CMC's software, so have that information handy when you make the call. Or, maybe another user of a CMC similar to yours can assist you with that.

    In any case, these CAD files (DXF, DWG, CDR, PLT, etc.) are small enough to be emailed as attachments, so when files are saved in compatible formats, fellow CMC users can share easily.
     
    Last edited: Jan 7, 2018
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