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21-08-2014 #1
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21-08-2014 #2
Me too Eddy. Just draw out an accurate grid on the pattern, measure and transfer the dims from the grid to a matching grid on the cad screen. Good luck. G.
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21-08-2014 #3
You could use your machine to probe an existing template or do it manually. Put a pointed tool in the collet, jogg the X axis a set amount each time, bring the Y axis across until the point is on the edge of the template, make a note of the X,Y coordinates, then it's easy to recreate it in your CAD software. Joint the points using curves, straight lines, or whatever is appropriate.
Here's a video of a cheap to make probe that could do the job, a better one would just trawl around the outside edge itself.
Last edited by EddyCurrent; 22-08-2014 at 09:50 AM.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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21-08-2014 #4
I don't use Vcarve pro but this is easy to do in any Cad/Cam package and I do it all the time for parts that don't need high accurecy. It's just a matter of scale and if you have templates to reference from then it's no problem.
Easy way is to draw 2 lines the length and width of the part then scale the photo to these lines. This will get you to within nats bollock in size then just use the trace function or as is often the case it's just as quick to free hand trace around the picture. Then create G-code and cut air around your original template to see how it matches. Make any changes as needed.!!. . . . . Simplizzzz.!Last edited by JAZZCNC; 21-08-2014 at 11:40 PM.
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22-08-2014 #5
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22-08-2014 #6
I'm pleased it works for you and I too have used it for small items but how far away from the existing panel template would you need to be to get a photograph without lens distortion ?
Last edited by EddyCurrent; 22-08-2014 at 09:28 AM.
Spelling mistakes are not intentional, I only seem to see them some time after I've posted
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22-08-2014 #7
Eddy these panels have HUGE margin for error in CNC terms so it's not a problem.! . . . How do I know.? Because I did exactly what I suggested when I upgraded our Ducato Van at work. It was same Shape Van as previous model so ripped out old knackerd panels for templates and took Pic. Worked like a charm dropped a pencil in spindle drew shape on board for comparison and was within mm's.
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