I've never built a euro, just order enough to make it worth the shipping. 2-3 tubes would probably be plenty. The nozzells are handy but you don't always need them. Just mix in a cup or paper the amount you will need. Saves the tube and the glue in the tube. Since the cure time is high, have several items tacked in place and glue them all at the same time. Some say you can clean the nozzells or put them in the freezer for reuse. I just throw them out as cost of convenience. The amount saved is not really worth all that.