[Austin W Hogan]

Lin Speed has been around a long time and is as the other contributors described; boiled linseed with a little drying agent added. It takes many many coats to fill the pores of a new, or sanded American Walnut stock.
The Lefever method of applying an oil finish was to apply oil with dryer heavily to the stock, and put it over the shop furnace for a week or two. The gooey oil was rubbed from the surface (across the grain)with burlap or coarse cloth. This filled the pores in one application. One or two thin finish coats were rubbed onto the surface. This may work with Lin Speed if it contains enough drier.

Second method to apply an oil finish in less than two lifetimes; thin spar varnish with turpentine. Apply with a soft fine brush repeatedly until the surface remains wet. Allow to dry and remove varnish from surface with steel wool. Apply second application if pores do not completely fill and reduce surface again. One or two applications of Lin Speed, well rubbed in, should produce a good smooth finish.

Best, Austin