OSB is a type of ply wood made from compressed wood chips. You could use any 3/8 ply wood. OSB is cheapest. Polly is black and white plastic. Black on one side and white on the other. When your stapling the polly inside the table make sure the staples are on the out side of the table.If you have staples in the dirt they will rust. Rust isnt very good for your plants. Hope that answers you questions.


Quote Originally Posted by thebullfrog
What is OSB and where can it be found? What is 'polly' and how do you staple it to the box?