As mineral oil never cures, you may have the same effect as a "blush" under
shellac or lacquer.

I would use the tung as a sanding lube, if I used sanding lube.

"paul rickard" wrote in message
news:QT4Xc.215416$gE.8122@pd7tw3no...
I have been using Mineral oil to soak into cross grained wood to
lubricated
the cutting surface and reduce tearing. When I finish with Tung oil
afterwards, and the finish cures for a month, I sometimes get a white
flake
appearance on the cross grain areas. Is this a reaction between Tung oil
and Mineral oil, or are the two compatable ?

Paul