Thanks for the reply! The oven weights 2500 lbs with the base it sits on. The steel I already cut up is 1/4" square tubing. I can get 4"x 3" x 3/16" at a bargain price right now from the steel supplier near me. Do you think that will be okay to go between the frame rails and the base (floor)?
The frame rails are 1/4" so this middle spacer would be a little thinner than what is on top of it and below it.
