On Dec 9, 8:55*pm, " wrote:
Has anyone had experience with a water protective finish for MDF? I
have a work table with an MDF top, and I briefly set a glass of ice
tea on it, and the wet spot swelled up.

I have on hand Watco, Exterior Watco, Waterlox, and several types of
varnishes. What would be best?

Formica.