I am trying to make a mobile base for my G0514x2. I'm going to bolt on Great Lakes self-leveling casters to the base as in this thread:

http://www.sawmillcreek.org/showthread.php?88934-Casters-on-a-G0514X2

The question is, the base on this saw is open, so people have bolted tube steel to the base and then mounted the casters to that. My question is whether I can just use hardwood. The guys who made frames out of tube steel have the tubes extending wider than the saw base, which increases stability, but would also put more stress on a wood member. Instead, I would just add the hardwood under the base with the bolt holes for the caster lined up with the exsiting base holes; the wood would really just be used as blocking.

Any cons to this?