I do not believe there is a reasonable way to 'completely eliminate moisture'. Applied finishes will slow down the absorption/desorbtion of moisture but not eliminate it. Some are better than others and more coats adds to their ability to slow misture transfer.
Epoxy, nothing else comes close. It is used in fabrication of wooden water tanks, bathtubs etc. There are kinds that impregnate the substrate and form water tight seal. Ask shipwright on this site or look up his blogs/posts. He is an expert on this and I recall he recommended a particular brand used in marine applications.
What is the result you're trying to acheive.
Is it going to be a table or a piece of painted furniture?
Or is it just a workbench (or similar) that needs a durable finish.
"I THINK ITS CALLED MDO". I'm familar with MDO, I've used it before, but it is very hard to come by in my area. Ifound a sign shop who will sell me a 4×8 sheet of it for $95 + tax.
"Use a water proof mdf (exteira) is the trade name .nice stuff". I've also heard of exteria, but that is even more hard to find and I understand it is quite expensive. I can find all kinds of materials I can use from the internet, but no one locally can provide it. It seems that only industry is privy to good materials. Unless I can commit to 1000 sheet orders, I'm SOL
The MDO I've used before is a good quality plywood (7 veneer layers for 3/4" panels) with a paper thin layer of phenolic on both faces. It comes and stays dead flat.
We ran some jobs at work out of it a long time ago and have had a short stack in our oddball plywood pile ever since. Unfortunately, that pile hasn't been stacked properly and the panels are now slightly warped.
If I recall, it cost us in the mid sixties per sheet, but then again, we purchase trailer load quantities of CDX plywood, so when we need something special or odd, we get good pricing.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
LumberJocks Woodworking Forum
2.5M posts
96K members
Since 2006
A forum community dedicated to professional woodworkers and enthusiasts. Come join the discussion about shop safety, wood, carpentry, lumber, finishing, tools, machinery, woodworking related topics, styles, scales, reviews, accessories, classifieds, and more!