[Justin Stiltner]

You will not meet your requirements with your budget listed, no matter how much work you do yourself. I own a maker bot, and they are nice, however, if your company is serious about this, it will cost you on the order of $25000 for a good base machine and support equipment. A maker bot or other diy machine will require more babysitting and tending than they will be willing to provide, whereas a professional machine designed for such use will be an asset. To my knowledge you can not buy any RP machine that will give you .001" accuracy, not even the 200k machine I worked with could do that. Sorry to burst your bubble, but I think you should call a few company and see what there is on the commercial side of things. $300 will not even buy the electronics to run one of these machines.