ORIGINAL: cgroen
Thanks Chad

The trick is to make sure that the sponge is everywhere so the cavity is closed! I then use 30 min epoxy with Tix and microballons so it won't ''run'' too much inside, Hysol would obviously be a better alternative, but I have not changed to that yet [

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why dont you guys use some balsa and Hysol?
insert some balsa and cover with hysol , then put it the horns?
also Carsten "what happens in hedensted stays in hedensted"