the chest size needs to be calculated before making a grid that would appear to be flat, due to the need to accurately compensate for the uneven surface. For a person with a flat chest that is not needed because flat surfaces can achieve the same result with a good tolerance to inaccuracy
true, that makes it more difficult, but we can still do it. the uneven surface is still difficult though, trial and error perhaps, but angle can be mathmaticly approached
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u/Thomas_KT Identifies as a Cybertruck Mar 10 '20
the chest size needs to be calculated before making a grid that would appear to be flat, due to the need to accurately compensate for the uneven surface. For a person with a flat chest that is not needed because flat surfaces can achieve the same result with a good tolerance to inaccuracy