<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1478827787399_7512" dir="ltr">Sean, I know we talked a bit about this idea before but I need a refresher. Can I machine a hole in a heavy sphere and insert a hatch land\reinforcing ring assembly that bolts to the sphere. It looks like Karl Stanley may have done that with his front dome. This idea if feasible makes building a deep diver more realistic. I am thinking of trying this on my current sphere just to see if I can do it. Better to screw up a cheap sphere first. ;-)</div><div id="yui_3_16_0_ym19_1_1478827787399_7512" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1478827787399_7512" dir="ltr">Next question, when I look at the Deep Rover sub, it has two hemispherical domes coming together on a two sided land. I am sure the land also gives the domes side support. Why would this design not work with two heavy steel hemispherical domes. I am talking 3 to 4 inches thick. The steel domes can easily be machined with a flat land and o-ring grooves. The idea is to eliminate a very costly weld and it would be pretty darn nice to build with the top half of the hull removed. </div><div id="yui_3_16_0_ym19_1_1478827787399_7512" dir="ltr">Hank</div></div></body></html>