I got these barstools with the pressed card board barrel backs. The customer just wanted the seats recovered. When manufactured they use 5" x 3" staples to connect the seat to the back. The problem is customers lean back and break one away from the other. I used 2" wood screws in the old wooden seats and it worked well except for a couple. The screws pulled right out of the old wood, now it needed new wood. The next issue was what seemed to be a loose back from the previous issues. Not. Now when they lean back the cardboard is failing/bending above where I reattached the back to the seat. My last attempt to remedy all of this is by using L brackets. I monster glued the brackets to the IB and screwed them thru the cardboard using a large washer with the nut on the backside. Lets hope this is the last time I see any of those stools back in my shop. I want to say it would have been cheaper to just buy new ones but that's not the case.