Mostly ever plan I’ve ever bought has somewhere on it in small print “you cannot make over “x” amount of items from these plans without written authorization from the designer”.
When you buy plans for woodworking, the people selling the plans know that a lot of people are buying these plans with the intent of making the item and attempting to sell the item. It’s a lot of wood worker’s dreams after all, to do wood work for a living. I think the small print legalese is simply to prevent anyone form legally doing something crazy, like setting up an assembly line and mass producing the item.
-- http://wddsrfinewoodworks.blogspot.com/
