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Originally Posted by bluefishercat
I hav'nt thought it all the way thru but is'nt a vacuum or lower atmospheric pressure the opposite of what you want, after all they don't vacuum treat lumber.
If you are trying to achieve maximum penetration, I would try and minimize the water content of the wood by drying it further than air dry. You could use a food dehydrator to accomplish that and then use a pressure vessel of some type to treat the wood with sealer.
I think i just thought it thru.
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By drawing a vaccuum in the jar , all air is drawn out of the wood and is then replaced by sealant . A person can achieve the same penetration in one or two hours by drawing a vaccuum as it would take months to achieve just by submersion . The moment the vaccuum is drawn , you can see the air bubbles pour out of the wood .
When the bubbles stop , I remove the plugs , wipe them down and let them dry . The addition of naptha as a thinner also allows for fast drying .
I got the idea of sealing plugs this way from a shop teacher I had in highschool , ( about a hundred years ago) , who had us use this technique to waterproof wooden handles using mineral oil ,which we attatched to metal spatula blades , (required project to pass the class) .
p.s. I still have the spatula
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