Having worked as a pipefitter before, why are you guys telling him to use high-end CAD programs? The average pipefitter just wants a picture of where the pipes go. Whether you're talking about piping a building or piping a machine, they don't need 3-D rendered drawings to show that.
Aside from that, I used to use Autocad and hated the fucking thing. Visio is a damn good program - especially with the addons available.
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