Finished wall, Greg?
The guy I was paired with when I first started my time, insisted I worked with 3/4" steel conduit.
In a house, this was in the late 1980's.
What we had back then was really strong arms and what we did was bend things a "bit" at a time, check it, if it looked good, we sent it up the wall.
Horizontal runs of anything back then were pretty much frowned on.
But then the TV aerial installer would come in and blast an RG-59/U co-axial cable across the same wall you'd just run steel conduit.
Sometimes they'd even knock a whopping great hole in the wall, to bond off our conduits, after the plasterers and painters had been in, of course.
