Interesting. I'm a software engineer. I've worked in finance in the metro NYC area for the last 22 years. I repaired computers professionally full-time when I attended university nearly 30 years ago. I could build a computer from parts with my eyes closed ever since. I built these 4 rigs in about a week, having never built a mining rig before.
I can't believe people put $3k worth of new computer equipment into open air setups. Buy a case for crying out loud. I use the Rosewill Thor V2 cases. They run about $130 from Newegg and come with 4 fans.
I'll put together another post with tons of detail on how to build a kickass rig. Stay tuned.