Ask HN: What to look for in a business partner?

I have had in my life a couple of good ideas and have developed a good technical know how in school and through various higher education degrees. But I have never found a like minded or at least complementary skilled associate to build a serious business with. I have participated in startups, and projects, as a skilled technician in various domains. I have always "enable" people to do their projects, but never really formed a team to build a common project.

I am sure there are a thousand ways of meeting a good associate, but what would be your advice on how to go about it ? Would you recommend working with friends above all ? Or more experience, maybe less technical people ? Do you have advice on how to set shares / rules / work ethics ? Any red flags when picking an associate ? Or good predictors for a productive association ?