Will have attached a jpeg, shows a scarf finger joint open that will give you the idea of what I was saying about "tricky" super strong as well. You can play around on the computer and change the angles, width of fingers, depth of fingers, how many you want etc. Only limit is that there must be a radias no smaller than the tool used where the hills meet the valleys (or peaks and troughs in sailing talk <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />) but that has the advantage of not being so fragile for transport and is better looking I think.How did you go with little Johnny from the factory?