Steps to creating a custom project enclosure

I'm in the process of trying to design a prototype for a custom electronics project. I have a 3d printer at my disposal and I would like to print out my initial prototype and at a later time get the enclosures injection molded. I'm looking for some advice on a starting point. Is there some sort of standard model I can start with? or do people typically always design these from scratch. Does any one have recommendations on a place that could do a short run of injection molded enclosures? any advice or starting points would be helpful 

caitlinsdad3 years ago
Start here https://www.instructables.com/id/Basic-workflow-for-3D-design-in-Sketchup-and-3D-pr/
ou can also browse through Thingiverse for models that you can tweak by downloading the files.  Good luck.
ouchthathurt (author)  caitlinsdad3 years ago
Hey, thanks! I'm familiar with the workflow from Sketchup or rhino to the Makerbot, what I'm wondering about is how that would translate to larger runs, if I wanted to get it injection molded, if there are certain things I have to do differently.
Look through Ponoko, one of the 3D production houses to see what they require for a run. and Shapeways.