I have found that carbon paper works really well but it is difficult to move the paper round (I have just bought lots of sheets)
Also using a spray adhesive to make the plans sticky then stick them to the foam board, cut everything out then peel off the plans.
Before you stick the plans to the foam board stick it to something else to remove most of the tackiness from the plans and adhesive otherwise when you take it off your foam board it will rip the paper off.
Also using a spray adhesive to make the plans sticky then stick them to the foam board, cut everything out then peel off the plans.
Before you stick the plans to the foam board stick it to something else to remove most of the tackiness from the plans and adhesive otherwise when you take it off your foam board it will rip the paper off.