I'm looking for piping to use as my rails. After looking at home depot, I found 3 possible choices. They are emt conduit, galvanized pipe & black piping.
I'm just not sure which would be the best. I'm kindof thinking the black pipe is not the way since I noticed some surface rust on a few of the pipes. While the galvanized pipe conduit had a nice surface, it was no were near as smooth as the emt conduit.
I do have to take the y axis length into consideration, since those pipes need to be about 5 feet in length. But it's a moving table and not a moving gantry, so not much weight will be applied to it.
Any recommendations?