Forums: Whisstock Designs: convert pdf to dxf or dwg New Topic Post Reply
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Posted: Sep 1st, 2012 at 09:04   |   Subject: convert pdf to dxf or dwg
hi george
I could not use the files I sent to you by e-mail, because the my PC is not in the AutoCAD file I hope will be useful to you. And we will get the 077 sailing bot DXF or DWG files for more information.
Best regards
Posted: Sep 2nd, 2012 at 12:52   |   Subject: convert pdf to dxf or dwg
When you convert a drawing to a DXF file the result is basically a series of numbers – co-ordinates of the lines and shapes. You can open a DXF file as a text file – but all you see is a long list of numbers.

To be meaningful your computer has to have a program that can read the numbers and convert them back to the original drawings, lines and shapes.

PDF format can be read by nearly all computers. And with PDF you immediately see the object that is drawn.

We use DXF to send files to a CNC cutting computer because that it was what most of them require.

We also convert the drawings to PDF so that everyone can see them as drawings. You can CNC cut from a PDF drawing using an optical 'eye' that transmits the lines to the cutting head – but this is less usual nowadays.

So you get two drawings with the 'DXF Package' – a DXF file to send to the CNC cutter and a PDF file so that you can read and print the drawing without special programs.

We usually supply the DXF files at full size, so that there are no scaling errors at the the CNC end. There is no extra information on them, like dimensions and so on – just the shapes to be cut.

We supply the PDF drawings at a suitable scale (commonly 1/5, 1/10, 1/5, 1/20 etc) so that they can be viewed on a ordinary computer, downloaded and printed etc.

Up until now, we the PDF copies have not been dimensioned drawings, though they do contain extra information about assembling the cut parts to make the component.

I have been thinking that it would be useful to dimension the PDF copies (or supply additional drawings that are dimensioned), so that if required the 'developed' components – that is the 3D curved parts, like hull planks, decks etc., drawn out as a 2D flat parts – could be marked out and cut manually, just like the existing flat parts (frames, cockpit sides etc).

Are you intending to send the DXF flies (when I get them done that is!) to be CNC cut?

Or are you actually wanting dimensioned drawings of the curved parts (like hull planking, decks and so on), so that you can draw them out manually?

Best - George