Camper Thermal Engineering for Extreme Cold & High-Altitude: Arctic Antarctica Tibet

[billiebob]

by the time you put your latest "breakthrough"idea into CAD - it's already obsolete again!

I fail to follow your reasoning.....
Some of the best ideas are decades old.
You just need to rework old proven ideas and use paper and pencil to draw them.

Often that "break thru idea" is just a refinement of someone elses better idea.