Brief instructions for her "berry apron," - hilarious looking, but it would keep your berries from getting mushed. Looks like she is using it for coffee berries, but I could see it for blueberries too.
In cold weather climates, bio-diesel is problematic, since it solidifies easily in cold weather. Instead, biomass gasification is a better way to convert animal fat to hydrogen, which burns well at cold temperatures.
I& posted here about the square foot solar cooker, and here is another of the many uses for it. This is a solar alembic, or pot still, made from square foot mirrors, which can produce between 2 and 5 ounces of distillate on a lazy sunny afternoon.
How to Remove Rust from Metal. When metal has rusted, throwing it away and buying a replacement isn't always an option. You can remove rust using household ingredients such as aluminum foil and a mild acid like white vinegar, or with.