What would you recommend filling the feet with?
would concrete be a good idea ?
I am thinking of drilling the feet for the cross section and all the beams, inserting some M8 treads, living about 2cm sticking out either side. Then filling with concrete. I can then bolt the cross sections and beams to the thread, right accross the feet, as opposed to just on one wall, which i dont like anymore ! The concrete should allow me to tighten the bolts without having to make bosses for each piece of thread. Hopefully, the concrete will not go to powder when tighten.
Problem i have with concrete, is that I cant "undo"! If it turns out that it wasnt a good idea, well, i am stuck with it.