Sealing slate

Oh man, that’s beautiful!

It is early in the season here so i am swapping over old frames (helps to manage possible diseases and infestations) which gives me a steady supply of wax.

At this time of year (early Summer in Oz) the bees are eager to make wax so they rebuild the new frames very fast


Does oiling stop the slate coaster from being somewhat absorbent?
And if so, is that more or less desirable than a coaster that does absorb condensation/spills?

Of the top of my head, I would think non-absorbent would be easier to clean, but absorbent would be more functional. (The difference in engraving contrast is not in question.)