Considering the unique grain pattern of the mesquite, some of us are concerned whether the hand-rubbed finish was equally applied in all areas
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Funny that you should mention that, yes some areas were rubbed more than others.
Regarding the finish, I have been using a 5-step process that works out pretty well. I hand sand and use a tack cloth between coats.
1.) Finish sand to #400 grit with a Dynabrade sander with a 3/32" orbit
2.) Apply a base coat of DeftOil clear, let soak in and wipe off excess. Let dry at least 24 hours. DeftOil adds a richness and durability to the final finish by soaking deeply into the mesquite, the oil takes at least 30 days to completely polymerize and easily penetrates the entire 1/8" veneer on my test samples.
3.) Apply a thin topcoat of McCloskey Satin Spar Varnish/
Waterlox Original Sealer-Finish mix. I mix 5 parts of the varnish with 1 part Waterlox. The mix is thinner than the straight varnish so it will have a tendency to run but it soaks in, flows out and dries without any brush marks if you are careful. The Varnish/Waterlox mix will bond to the DeftOil to form a protective layer that is actually in the wood, not just on top.
4.) After sanding using a block to level out the finish apply a top coat of Waterlox. Let dry, sand and repeat as necessary until the finish looks perfect or you get bored.
5.) Let the perfect finish dry for a couple of days then wax with a Minwax/Waterlox mix. I borrowed this idea from Sam Maloof who finishes his chairs with a mix of half linseed, half tung oil and some bees wax. My custom finish dries overnight and will result in a more durable finish. Melt 1 part Minwax paste wax in a double boiler using a hot plate, add 1 part Waterlox Original Sealer-Finish and mix well until melted together. Apply the mix with 0000 steel wool and buff with soft cotton rags, let dry overnight.
Wayne