I'm making a coffee table out of an old bowling alley lane and it's 4'x18". I wish I knew exactly what it weighed but it is heavy. It's too heavy for me to move without dragging it - although I'm not very strong. My partner can move it down the stairs with a lot of effort.
So my question is that I wanted to use tube legs or hairpin legs but it would leave the entire centre of the table open - and it is heavy. Should I have additional legs in the middle? Or should I trust the wood?
I do of course have horizontal bars to keep the wood from sagging towards the middle horizontally (?) but I'm worried it will sag towards the middle length-wise.