I seem to be having an issue with the laser printer not printing to scale for home etching.
What I have tried is:
Plotting the circuit board as both PDF and SVG formats.
When loading either format into Inkscape, both plot formats are the exact same. I have a grid setup in Inscape to verify they are true and correct.
However, when printed to the laser printer, the prints are always smaller… Example: A 2.5mm pitch for pin headers, etc. is simply not correct… Always too small on the printout, as with everything else on the board.
Is there a “rule-of-thumb” scaling factor to use when printing ? A printer setting ? Just trial-and-error ?
Printer is Canon Image Class MF232w.
Any advice appreciated.