I've seen a few examples of people wrapping ABS plastic around a MDF ring to recess the driver and make cleareance for a grill.
I get the concept but fail to see how you would "fill in" the area outside where the Speaker recesses into. Does Bondo / fiberglass resin stick to abs plastic?
What are some alternatives to using abs? I was thinking MDF but fear the difference between I.D. and O.D. of the material would be too small.
Anyone with a useful link to demonstrate this please step in...