darcshadow

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Posts posted by darcshadow


  1. Have you tried setting up your anti-virus to ignore the signblazer program? The code of signblazer has long been thought to be a virus by most scanners simply because the program is so old and how it did things are not considered "safe" in today's computing world and anti-virus programs think something suspicious is going on.

    You should be able to setup your On Demand scan to ignore individual programs that you know are safe and ok to run.


  2. Auto tracing is iffy at best in most programs. If you have a really high resolution image auto trace can do a decent job, but best bet is to manually trace/recreate an image. In this example, it wouldn't be too hard, the shield design is pretty basic and could be done by hand. The fonts will be a little trickier but most decent design programs and distort fonts as in the design. The only thing you wouldn't get would be the grunge/worn look, and with cut vinyl you really want to stay away from that type of design anyway.

    • Like 2

  3. Static would be my first guess, and easiest to remedy. Ground the stand that the vinyl rest on. You can either run a grounding wire from the stand to a ground point on the cutter, or to a local ground such as the ground pin on a standard outlet.

    Second possible problem is that you're using a mac. The MH cutters are sold as not compatible with macs. I suspect this is more an issue with the cheap usb chipset than anything else. which brings us to the 3rd thing.

    Are you using USB or serial? Serial is recommended as the USB-2-Serial chipset built into the MH is cheap junk. If you don't have a true serial connection you can get a tripp-lite adapter. It is the only one known to work every time, all the time.

    • Like 1

  4. A string and straight edge would work. Lay the straight edge across the top of the cup and set it for the width of your image, then take the string and wrap it around the cup to get the length of the arc. Then just stretch the image out to the length of the arc. That should work, I like knowing the math as well.


  5. Wildgoose, I don't think we're talking about the same thing. Here's a diagram. In order to get the red square to appear square on the cylinder, it will need to be stretched to the size of the blue rectangle.

    Capture.JPG

     

    Go-C, after doing the math, 10% is pretty close to what the math comes back with. It'll vary some depending on size of cup/cylinder and size of image but 10% is a good ballpark.

    After some more thinking I think I decided I want to shrink the height rather than change to width so here is my new equation.

    H = h/w*D*sin(w/D)

    • h - height of image
    • w - width of image
    • D - diameter of cup
    • H - new height for image
    • Like 1

  6. Are you wanting to use the vinyl just as a stencil? If so, I've found that if you put the cup in just long enough to get the powder to flow, then pull it out, let it cool a little then remove the vinyl and stick it back in for the full cure it works quite well. Timing on removing the vinyl is key. If it is too hot adhesive residue gets left on the cup and is a pain to get off after the full bake. However if you wait till the vinyl and powder are too cold removing the vinyl is harder and the lines are not as crisp. For designs with a lot of pieces to remove I will use a heat gun to keep the vinyl and powder in the sweet spot for removal.

    If you're putting the decal on to stay and then clear coating over it, I have not tried that yet, but I've read online where most powders can be baked at a slightly lower temperature for a longer period of time. There are also some lower temperature clear coats that cure as low as 325 to 350.


  7. Did you try google and if so what did you search for? I simply put in snowmobile tracks graphics and found tons of different tread patterns. None of them have the ski tracks from the front it, but that'd be easy enough to add manually.


  8. Getting is straight isn't my problem, The pattern along path in Inkscape takes care of that for me. The problem is say a 3" square when applied to a cylinder will not appear to be 3" wide anymore because of the curve, it'll appear to be slightly less. So you either have to make the image shorter or wider to keep the original aspect ratio. This is not usually an issue for most designs but I have one that is, at least it is to me, because I have noticed it, and now every time I look at it I see it.


  9. After a bit more thinking I don't think this is as complicated as I thought it might be. Dusting off my high school geometry I think the following will give the width you'd need to stretch an image to get it to appear at the correct aspect ratio.

    Stretch Width = arcsin(image width/Diameter of cylinder)

    Need to experiment, but I believe if I stretch the image as specified by the equation and then run it through the cone correction tool when applied to a glass it should be straight and have the desired appearance.

    • Like 2

  10. I know how to account for the cone shape of a cup to get the image to go straight, my question is does anyone have a formula that accounts for how the image looks  on the vertical curve. For example, if you place a square on a cylinder and then look at it straight on, depending on the radius of the cylinder and the size of the square, it will look like a rectangle. It will appear to be taller than wide. Anyone have a calculation to compensate for this?