I plan to use microballons to make wing fillets for my Dynaflite Chipmunk. I have read about the use of resin, bondo, epoxy, etc. with this product. Does anyone have any experience using Polyacrylic with microballons for creating structures like wing fillets? I've used the Polyacrylic for glassing wing joints and its worked well. Can anyone out there advise me before I take the plunge.

I use an automotive body product called Icing. It is a two part mix and is like bondo but much more fluid. It has the consistance of cake icing hence the name. Dries hard,sands like a dream, paintable, and is very light. If you need more info PM me and I will get the name and address for you. Its raining dogs right now and the shop is in the back of the property.