This video shows (at a subscriber's request) how to create a plastic case using existing drawings.
Model files: https://drive.google.com/open?id=1Fkz...
Adding ribs: https://drive.google.com/file/d/12rro...
http://www.gainta.com/g1213g.html
http://gainta.ru/g1213g.html
https://www.chipdip.ru/product/g1213g...