Thanks steel post is 65mm x 65mm approx. Hopefully standard size. What horizontal timbers would you use and how would you join them? Thanks so much!!

Thanks for the advice I'm willing to give anything a go. Could you explain how I would bolt it and do i attach it at top or just solidly at bottom?

Hi I need to attach plywood to my shed wall so I can install bike racks. Advice seems to say attach the plywood to metal frame of the shed but there ...