Here you go:
I didn't find a round one but found this that might help get you started - https://www.youtube.com/watch?v=pcud30Otw7Q&app=desktop
Essentially you need a piano hinge which are easy to find at your local home improvement store.
Hi Cathy, the easiest way (if you are using a table that is already made) is to slice it where you would like the drop leaf to be and then add several piano hinges to the cut. You will also need a way to stabilize the table when it is up so you will need a lock mechanism to hold it upright. You can find both the hinges and the lock mechanism at your local home improvement store.
This shows how to make a drop leaf table: https://www.youtube.com/watch?v=qP3HVgN1dhU
Hi Cathy: Are you talking about a round table to fold up like a tv tray table? If that's what you are looking for, check these sites:
Is this what you had in mind?
Hi Cathy, hope this one helps you out,