Partnerships CAN work, some of the best decisions we have made are because either myself or my business partner brought a new perspective to a decision the other didn't think of.
As we are a new business getting everything started was the toughest part for us, and negotiating buy/sell agreements before the business even starts can get frustrating and depressing because you are trying to decide what happens if the business starts to fail, but it's crucial to have that stuff settled beforehand. (stating the obvious of course)
It's amazing the stuff lawyers bring to the table for you to think about....
Good luck Artbot, can't wait to see the stuff you start making!