A5fly...if it works for you...your plug (master model) concept is great...the important thing is the process you choose works for your application...Ron I would not argue with your plan either...I think if I were building a wing tool I would use your concept for the master...if I were doing a fuselage (compound contours) I would lean towards A5fly's concept...the deal is...your master needs to be dimensionally stable...how you get there is sorta up to the individual...plaster, wood, foam and all sorts of other stuff are used in the composite tooling industry...when I was a tool builder we would basically look at the task at hand and go from there...now with Hi temp tools there are a few more factors involved...but room cure stuff it was basically whatever works...good luck and have fun!!!


P.S. It's kinda neat...see I thought I was the only person in the world doing this stuff in my basement...it's kewl to see all you guys doing it too...lol....now I can tell my neighbors that I am not all that crazy....actually...they think it's pretty kewl...all my neat tools and such...ya gotta admit...when one of your neighbors walks in and you got something in a vacuum bag with the pump goin' and the all gages and stuff...it's pretty impressive...they think they have walked into one of Lockheed's factories or something...lol...and they think I am sooooo smart...well maybe I won't tell them after all...lol