A mate of mine in boatbuilding had some spare international everdure, which is a two-part clear low viscosity epoxy (yeah - that's a mouthful).
He mixed some up and thinned it some more with epoxy thinners, chucked it in an open top plastic bag with the timber part and into a pressure pot which he jury rigged up to the vacuum pump for fibreglass repairs. Kind of overkill, but it seemed to work very well. The chunk of timber drank all the epoxy and stuck itself nicely to the bag at any rate. I think that stuff - from the small number of times I used it anyway - has a ratio for the amount of thinning it can take for various temperatures and it's designed to stabilise wood for painting and moisture blocking purposes. You can get it in relatively small amounts and it's quite cheap in comparison to some of the specialist stabilising products from what I see? This project was to replace another surround on a part of the boat that always ended up covered in hydraulic oil just due to the old fashioned design of the parts - he got sick of replacing the oil soaked timber so made it solid effectively. If it handled that it should be good for anything else...
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