Ask HN: Device case prototyping and mass production

Hello I&#x27;m looking for a strategy and advice on how to make a case prototype for a device that really needs one. The current device manufacture stoped producing their cases. And far as I can see on the internet NO one is making them.<p>The device in question can fit in your hand and its not a phone.<p>Ideal case would be rubber with hard plastic on the outside of the corners.<p>Can I 3d print rubber now with hard plastic?<p>Please advise.<p>Thanks