ORIGINAL: sebo
For fuel proofer use BalsaRite for film. I put some on 2 pieces of balsa. Then I put the sticks into a baby food bottle full of 15 percent fuel. Closed the lid. Opened the jar 2 weeks later and broke the sticks. They were perfectly dry and snapped as they should have.
Been using it ever since. I also use it over dope if I want a colored look. Works great!
I recently bought some balsarite for fuelproofing and also to seal the wood before I glass with poly. I was expecting the balsarite to be thin but the can I have is more the consistency of honey. Are you able to brush this on pretty easy?