I've mixed that white stuff with plasters of all types. Makes it harder and less prone to flaking. Also, when mixed with concrete, it seems to inhibit cracking.
IMO, it's use with wood is best confined to popsicle sticks. It's about 1 step above school paste.
'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton
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