I am also a PE who has started a one man design and 3D printing business. I went with a proprietorship, because I am not designing or selling anything that could cause damages that I could be liable for. I'd say it depends on what you're going to be designing.
Maybe someone in here can help me out...
I need performance data for a water cooled scroll chiller, about 100 tons, R-22, manufactured in the early to mid 1990s, any manufacturer.
I used to get this type of info from a website that had an online York service catalog, but it's been taken down...
