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Been reading this forum and checked your videos (Julian, thanks for those, they are excellent) and yes, miniature scale models, environment etc. are subject and prone to all sort of bias.... Mostly, I wanted to make these models to have hands on "feeling" how a cap could look like but at the same time give "inspiration" through actual models and see things by myself how "aerodynamic" things work on small models...
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Does that mean I don't need to repost
that picture of Polymetal again? Stiff as 5/8ths plywood at 1/10th the weight (and 3 times the cost at pre-COVID prices). I can demonstrate how to get a arbitrary compound curve out of a flat sheet with minimal cuts.
The size model you have can work; just upside down in a water tunnel with hydrogen bubbles. See
ecomodder.com: graysgarage: Automotive Aerodynamics (video series)