Half a gallon of wood glue, a pile of random, scattered resistors, or in [Ken]’s case, closed-cell silicone foam. Wanting to avoid this situation he set about trying to make his own silicone ...

Do I buy open-cell or closed-cell? Yes, there are two different types of spray foam, and they have two very different ...

It comes in different shapes, sizes, and material compositions, and with one of two cell structures: open or closed. Pool noodles are made with polyethylene foam, which has a closed cell structure.