Jigsaw starting to look promising...

I am really pleased with my actual jigsaw graphic.  I  have been testing out cutting a small jigsaw of 12 pieces on ordinary paper and it works well.

I have spent the whole morning trying to cut my jigsaw on different thickness of card with little success.  However, a kind soul answered my plea on a messageboard and suggested I do a 'multicut' (cuts the whole pattern more than once) which I had tried before but with not enough patience!  So I tried again and it worked - it needed 3 cuts!  The card is quite thin but actually quite sturdy and because I am making a large format jigsaw to accommodate my Mother's eyesight I think it will work.  Dare I try the 100 piece jigsaw....