BE a welder? I beam? Grinder? Not really. I am not a welder, however I can weld, do have a welder - if I can ever get it back from my sons. Don't need an I beam, in fact just need whatever scrap metal pieces I can find. Have a grinder too, and would be handy alright for cutting the metal and smoothing, but with careful measurements and cutting, a hacksaw and file will work too.
Actually, after thinking about it, flat pieces of metal, drill, time, careful measuring, would also do it. Wouldn't be pretty, but would work. You guys forget, different background, so I don't think like you.
Riser blocks have even been made with wood, and apparently work well. Look it up.