I print the drawing out in several sizes, even if I need to print it on multiple pieces of paper.
I decide on 125% as the size I want to ink. I take the three prints that together will make the entire drawing, and place them on a light table. I use the light table to tape them together so they are perfectly aligned. There will be overlap, which I want.
I then place the taped-together print on a cutting table and use a new Xacto blade to cut them each apart, trying to find a path that misses most or all the critical parts of the figures. I am sure to press through both the top and bottom page in one pass. I discard the extra paper, and am left with three puzzle pieces that fit perfectly together to make a complete drawing. I did this so that when I trace the drawing down there will only be one layer to press a line through. Sadly, I have a giant Epson printer that could print this on one seamless page, but I never have had time to hook it up.
I re-join the three prints, being careful to tape them together in the blank sections between and above and below the figures to keep the tape out of the way of the drawing. You can see how much bigger this final print is as compared with the original.
Finally I turn the drawing over, and using a scarlet Col-Erase pencil, rub a lot of graphite on the lines on the back of the drawing.
the printer doesnt matter,you print out what you are going to trace over anyway to make the drawing overall bigger.you redraw it basically.so.the quality doesnt matter when it comes out, just HOW you retrace to keep the picture lively.
Thanks for sharing