Now to cover the outside of the heat duct with 2 plies of BID at 45 deg. top and sides.
Workshop temperature 25 deg C and humidity 48%.
Mixed a batch of epoxy with 146g resin and 56g hardner. Poured some of it in another cup and added micro bubbles.
Applied micro to the foam on the outside of the heat duct and applied epoxy to the existing glass surface on top of the heat duct.
Applied 2 plies of BID and covered the layup with Dacron. Curing.
