I buy 24 inch X 30 inch card stock at Office Depot. I then take carbon paper and lay it over the card stock. The next step, I lay the plans on the carbon paper and trace the lines to the formers, ribs etc. which the carbon transfers to the card stock. Finally I cut the now drawn templates out of the card stock thus saving my plans. I trace around the cardstock onto the wood and cut the parts out of the wood thus saving my templates along with my plans for future repairs or replacements after any unfortunate flights.