Brian,My apologies. As I was typing that response I decided it would be appropriate to save it until the future when I have something complete to share, but inappropriate to insert it into a discussion of your mock up. Unfortunately I hit "Send" instead of "Save." My faux pas.Best regards,JimIn a message dated 1/6/2011 10:55:28 P.M. Central Standard Time, JimToddPsub@aol.com writes:Hi Brian,That's a pretty impressive mock up. Don't think I even want to post pics of mine after seeing yours.I'm taking four pine 2"x12"s three feet long, setting them on edge arranged like floor joists, and cutting a 30" radius in each one. They are then notched out around the radius to accept 1x2 longerons. I then attach sheets of 4'x8' sheets of Formica laminate to form the hull.In a message dated 1/6/2011 10:26:16 P.M. Central Standard Time, ojaivalleybeefarm@dslextreme.com writes:Hi All,I uploaded some pics of my mock up of my pressure hull. It is sitting on a trailer in my garage. The same way it will be and on the same trailer as when I get the actual pressure hull. ( Good idea to commendeer that space before the wife does !!) Also added a picture of my newly aquired diesel engine under a seperate catagory.mock up:if that link doesn't work go to the projects page under Brian Coxbrian