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Tracing PDF files

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8 commentaires

  • Milan

    I don't know but first idea which I got is to convert pdf to dwg first, to see what would come out. Maybe try some online service like https://dwg.autodwg.com

    BR, Milan

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  • Jacant

    Good idea from Milan

    The problem with PDF files is that it could be a 'Raster' file or a 'Vector' file. If it is a Raster file then when converted you will most probably have two lines adjacent to each other, the thickness of the line as shown in a PDF file. Unless it is a very good converter that takes the 'center' of the lines.

    Raster PDF is an image made of hundreds (or thousands or millions) of tiny squares of colour information, referred to as either pixels or dots, typical scanned PDF, or photos in a PDF.

    Vector PDF uses maths to draw shapes using points, lines and curves. Typically electrically created PDF originally from CAD program, or published/converted from CAD drawing files.

     

    The other problem is how can you get a DWG file into DSM. Apart from the Add on.

    Sketchup can import DXF and DWG files. If you do not have the pro version then Google Sketchup 7 has. It is still available on some 'Old Version' sites.

    Once in Sketchup either Scale here and save as a SKP file. Or scale in DSM.

     ,

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  • Jacant

    Forget the online 'Converter' I have just tried with an old PDF file.

    The online converter gave me 'tramlines' as I explained above. I also imported the Pdf into 'Inkscape' that gave me single lines.

    Save as Autocad DXF.

    https://inkscape.org

     

    To 'Scale' in DSM. Select all and use the 'Pull' tool with the scale option. Pick an anchor point press 'Space' and paste your scale. Do the maths first. Or do the maths in the input box.

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  • Milan

    👍 Bravo, Jacant! Inkscape to the rescue... so useful program! It can vectorize anything... 

    Nick, if you don't know how to do it, maybe it is best to post a pdf file...

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  • Nick Clarke

    Hi, many thanks. I have had limited / nosuccess with Inkscape, I can just about manage Design Spark. I will have another go, it might be easier inporting/converting a pdf than actually trying to draw something...

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  • Milan

    Sorry Nick, honestly I didn't know that DSM has no native dwg import, as I'm totally new to this program. Maybe you could try with STL. Online you can convert PDF to STL and see what comes out. Maybe worth a try. BR

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  • Jacant

     ...I have had limited / nosuccess with Inkscape...

    You do not need any experience of Inkscape. Import the PDF and save as DXF. That's it.

    Have you used DXF before?  What program do you use to get your 'Gcode' for the CNC?

    You will need to clean up the DXF file. I would use 'NanoCad' Select the lines that you need for each 'Part' that you want to make into 'decks'. Copy and paste them to a new file, scale them to the correct size. Save each 'deck' as a separate DXF file. 

    There are many DXF to Gcode converters available.

    https://listoffreeware.com/free-dxf-to-gcode-converter-software-windows/#:~:text=Check%20out%20the%20below%20steps%20to%20perform%20DXF,available%20sessions%20namely%20MILL%2C%20Plasma%2C%20Turn%2C%20and%20Foam. 

    https://nanocad.com/products/nanoCAD/ 

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  • Nick Clarke

    Cheers, I use Vectric V carve Desktop which has a built in post proceaaor to generate g code...

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