hi, i believe that is posible to do
only need some points to take care:
first, the construction of the saw, a 14" bandsaw is not the most rigid and heavy machine, will vibrate when starts to cut metal
second, a horisontal bandsaw will only cut sheet metal and small diameter stock, i dont think that it will be able to cut more that 1" diameter carbon steel, not at least you build some kind of auto feed mechanism, and put good tension on the blade, with the risk of abuse the construction, wheels and bearings.
a light duty 14" bandsaw will not cut metal like is equivalent 4x6" horisontal metal saw, just only will work for small stuff and sheet.
btw i have seen a lot of pictures of homemade powered hacksaws, maybe build one of these will be more usefull that mods the 14" for metal, and seems to be a fun built
thats what i think about that, just me :
Saludos