I'm building an outdoor table and the table top is being assembled using dominos and glue. It's 6' long and I'm using pipe clamps to clamp the long side together while the glue dries.
As I was tightening the clamps in order to bring the joints together tightly, I noticed that the entire table was cupping due to the pressure. I reduced the pressure once I got it together and it seems to have glued up well, but ideally I would be able to keep the pressure on while the glue dries.
What are some strategies I can use to prevent this from occurring when clamping really long and thin (3/4") components?
Since a picture always helps, I am clamping the length of this table top (pieces just placed for layout here):