Thank you @Jules! I take it you used AI for this. I searched a bit and seems EPS to inkscape would requires some tweaking in windows
http://clownfishcafe.blogspot.com/2014/05/importing-eps-files-into-inkscape.html
I did want to do the larger 18x8 but will try and do that myself 
Single lines doing double duty work ok to get the pieces though FWIW 2x manual cut is better on PG - so that the assembly goes in well (with single cut it’s good but too tight to put/click together)