I have a closed solid ( moulded part ) , I am driven by need to detect upper and lower surface given a certain orientation axle.
is there a rhino command to select in one click upper and lower ?
the only command which is returning some kind of result on this respect is “DraftAngleAnalysis” but it is only a visual command and it analyze the angle not the 2 skins.
the other somehow useful command is “silhouette” crv but this command is not just returning the sorrounding crv ( theretical mould parting line ) but also inner curves even if i apply it to a closed solid , thus generating a tangles mass of crv that need a timeconsuming cleanup.
The obvious idea was to used this crv to split the solid thus creating the 2 skins.
does anyone have some suggestions on how to solve efficently this task ? without fixing all curves manually or even worse by selecting surfaces manually
many thanks in advancee