Hi all, I'm new to the forum and need some help. I am a drafter at a millwork company and need some assistance for a cantilevered wood countertop. we need to cantilever a 3/4" thick walnut countertop and I have designed a metal frame to support it but I need to verify if my design will work so the cantilevered area will not sag. the frame is made of 2" x 2" steel tube with 1/8" walls and will be anchored to the concrete floor. I also added an angle metal diagonally to give more sturdiness but I am still worried with the weight of the counter that it will sag. If someone can help me out and maybe give me the formula so I can figure it out for future project that would be great. Let me know if you require more info.