Starting with my grandfather my family has been building a kayak like boat for many years. It's design is taken in part from another boat the (pardon the spelling) ooiyak that was used for carrying heavier loads than the kayak. My idea is an extension of an idea that I have been working on for something else. My idea. A piece of capped 6 or 8 inch diameter pipe with a recycled refrigerator or freezor compressor adapted to be a vacuum pump. The wood strips would then be put into the pipe the autoclave like door wood be closed and the "vacuum" pump would be started. Excess moisture would be drawn out of the wood and sealants or preservatives would be drawn into the wood. A few considerations would have to be observed. Volitile solvents also boil at the lower pressures in the chamber. Some of the newer water based varnishes would likely not be harmed by the water vapor boiling out of the wood. I haven't tried this so experimentation would be required to test these theories.