03on22s
+1y
No matter what they say, it can't be too strong. Fleece is not a strength giving material, it's for shape. Make your frame, stretch fleece, and then resin. Don't mix hot or you'll have to deal with shrinkage really bad. After it dries knock it down with a DA then put another coat of resin on top of it, this coat will self level its self and you won't have near as much sanding to do. Now for strength, get to the back of the material you stretched and resined. From behind use mat and resin and go to town. At Kicker for a rule of thumb we say minimum of four layers and thats just on custom panels and tweets. For mids I would go around eight layers, and for subs we go about and inch to inch and a half thick. To finish use duraglass to get any shape you want. Sand with 40 to get it level. Finish this with bondo. Try to get it smooth enough that you dont have to use a shit ton of bondo. Just use it for filling small pin holes.