"Mac Cool" wrote in message
...


Many of the boards have separated slightly and left gaps 1/32-1/16". I
would like to fill these cracks.

Depends on where you live. this is January and in many houses, it is dry now
but wil be humid in July and the gap will disappear as the wood swells.


I chose shellac because it is easier to
work than varnish, doesn't smell much, dries very quickly, isn't finicky
about surface prep and is easy to repair.

Shellac has been used for years. Be sure to ventilate well as the alcohol
is flammable.