Posted by dellus on
URL: https://forum.librecad.org/DXF-file-oversize-or-undersize-problem-and-a-workaround-solution-tp5717334p5717335.html

Why so complicated?
Yes, at first start Print Preview sets a page margin to ensure all the content will be on the page, with some space around it. If you want an exact scale, you have to set this manually, by choice from the drop down list or by typing in. "Fixed" indeed is not always persistent. If you draw a frame around the design, do it in the size of the set paper, if the drawing is other than 1:1, scale that frame accordingly. You then can do "Center to Page" in Print Preview instead of shifting around manually.
Important: stay in Print Preview mode when hitting the "Print" icon.
Yes, the inbuilt pdf/svg export can produce jiggly output of curved elements. I experienced this especially with text. If you are on windows you might use an external pdf/svg printer. Or on linux the Cups pdf printer.
When using an external dxf to pdf/svg converting service, or program, you loose control over the final layout of the drawing, linetypes, lineweights, fonts, dimensioning looks, hatches etc. Only in LibreCAD itself it will appear as intended.

Ask again if you need further help.