QCAD.org Forum

I am trying to convert a drawing to PDF but I cant figure out how to convert it to an axact scale like 3/4 all I can find is ratios. Can any one help

I'm not sure I understand you correctly.

Do you mean by "3/4" that for example one inch is printed as 3/4 inch or 1cm as 0.75cm? If so, you can enter that scale factor directly into the "Scale" input field in the print preview (see toolbar while in print preview mode). The notations "3/4", "3:4" or "0.75" are identical.

My Drawings are architectural and measure in feet and inches so some are very large. The printing company that I use only uses Autocad so he cant print DFX files. So I have to convert them to PDF. I have figured out how to change the paper size to 3'x2' (standard for blueprints) but I cant get it to convert to an Architectural scale such as one foot = 3/4" printed. I am just a carpenter and new to cad so forgive me if I sound dense.

If your drawing unit is "Inch":
- In the print preview, change the scale to: 3/4" = 1'-0"

If your drawing unit is not "Inch":
- In the print preview, change the scale to: 0.0625

Thank you, That worked great

Here is how I have this drawing set up. Paper width=91.44, height=60.96, Main drawing unit=inch, Format=Architectural and Conversion scale set to 0.0625.
The problem is when I export to PDF it saves a blank 91.44X60.96 image. I get a page with no drawing.
Also, in case you need to know, I use the current version of Ubuntu Linux.

This is a known problem with custom paper sizes. It will be fixed in QCad 2.2.2.0. For now, please use standard paper sizes if possible. You might be able to change the size of the PDF with a PDF utility after the export.