It was all done in a freeware IMSI turbo cad
goto file/print then click on page setup
make shure your set the scale to 1:1
under printer paper :
enter the size of the paper your printer uses (A4, A5, A3 )
under drawing sheet size:
enter the size of the actual drawing, mine was about 310 x 450 mm
click ok, then print
thats how it was for me in IMSA turbo CAD 2D
now there is a gap of about 2mm between each page when u tape them together so u will have to cut that 2 mm off
my guitar bodey was about 4 pages