Came across this today. Neat idea.
That is an interesting idea. I wondered if it would be possible to put a piece of wood that has been soaked in BLO (or raw linseed oil) and then wiped off into a vacuum bag to encourage the oil to soak into the wood fully. Wasn’t too sure about wet/oily stuff in a bag though. I can never get them to seal perfectly.
The secret is putting a folded up paper towel in before the sealing area. This wicks up any moisture before it actually gets to the sealing area.