Replies

1. 
   HowardAcheson | May 26, 2007 12:34am | #1

   What species of wood is it? Shellac is only used before a stain if you are attempting to even out the coloring on woods that do not stain evenly. Even then, there is a technique that needs to be followed.

   Shellac is sometimes used after a stain if the stain and the final finish are not compatable. You would never use a shellac if you want to apply an oil/varnish finish like you suggest. Oil/varnish finishes need virgin wood to be able to be absorbed. Shellac would seal the surface preventing the absorbsion of the oil/varnish.

   Let me also suggest that you not use turpentine. Turpentine has a very strong and long lasting odor. It's not the type of odor that is very appetizing. Use mineral spirits. Standard interior varnish or poly varnish is a better choice than a spar varnish. Spar varnishes are soft and flexible so they can stand up to environmental changes. They are less durable than interior varnishes and no more water resistant.

   Howie.........
1. 
   willy | May 26, 2007 02:24am | #2

   Thanks for your comments, Howie. The wood is white ash. O.K., so I'll stain then rub on the boilded linseed oil/mineral spirits/interior varnish - about 6 to 8 coats. What about the reverse side of the table? Could I safely apply shellac or is there a better way to seal the underside?

1. 
   SteveSchoene | May 26, 2007 05:10am | #3

   It's generally best to use the same treatment for bottom as for the top.  Shellac on one side would retard moisture transfer to a greater extent than oil/varnish.

   Remember too, that with the oil/varnish mix you are not trying to build up a coating on the surface, only to make the surface smooth with an even sheen that is in the wood, not on it.  The oil/varnish mix is applied, but then MUST be wiped off thoroughly.