[curt]

Wrote a few articles a couple years ago for HN on physical products here's one of them: https://news.ycombinator.com/item?id=1840896

elaborated a bit more here: http://curtgeen.com/post/7575880635/expanded-part1-design

I've been out of it for a few years but if you have any questions I should be able to point you in the right direction.

[curt]

they do a great job at explaining injection molding:

http://www.protomold.com/Resources.aspx