These are drawn for hand cutting. I draw the working plans for foam wings on 200gsm poster card. They are usually coloured and it is rare for me to do a white set. A1 sheets are available from most book shops. Years ago I did them for cutting the foam blanks and they had no other information on them but these days they are the master plan and everything is on them. Dimensions of where the wing tube is, the servo and hardpoints are cut out which makes the transfer to the foamcore and ultimately knowing where these are after the wing is skinned.