Yep, what they said.

Another bedding compound that is even better than accra glass is devcon. It's a steel based compound and is super strong but it ain't cheap. It's a lot thicker and a lot easer to work with as well. The glass tends to be very runny unless you add some fiberglass flocking to it.

Accra glass also makes accra gel which is also thicker and easier to work with but is not as strong as the glass.