WRINKLES
Your Bigfoot was packed at the factory without any wrinkles in the covering. You may notice some
wrinkles now; more likely, you will notice a few in a day or two or the first time you take the plane out to
the flying field. These wrinkles are the result of wood shrinkage and/or expansion. Balsa wood changes
size and shape slightly as it is exposed to varying humidity in the air. This is a natural property of balsa
wood. As your airplane adjusts to the weather in your part of the world, wrinkles may appear and
disappear.
Wrinkles may be removed with the gentle application of heat to the covering material on your airplane,
using an iron and/or heat gun. Apply the heat gently: the covering material will shrink as you apply the
heat, and this will remove the wrinkles. BE CAREFUL! Too much heat applied too quickly can damage
the covering, either by causing it to pull away from the wood at seams and corners or even by melting it.
Wrinkles do not affect flight performance.
COVERING MATERIAL
Your Bigfoot is covered with genuine OraCover material. If you need to repair sections, matching
covering is sold at most hobby stores under the “UltraCote” brand.
Using a sharp hobby knife, a small-tip soldering iron, or a hot knife, remove the covering material over the
door and window openings on the fuselage.