Osmo Polyx Application Instructions for Walnut

Walnut Desk with Osmo Polyx Satin-Matte Finish

Osmo Polyx Oil Application Instructions for Walnut


As furniture makers, there are some woods we just love. For most of us Walnut is definitely one of those woods. Everything about walnut seems to be special, Special procedures by mills to get the best color, Special grading instructions from the NHLA, A special feeling when we finish a piece of Walnut, and a special grain structure. Applying Osmo Polyx Oil to Walnut is no exception. 


Walnut is known as a semi-ring porous grain wood. Translation: this means that it has bands of very fine pores through most of the wood. Because of this special grain structure finishing methods need to be augmented to get optimum results.

  • Once you have finished sanding (no higher than 180G) your furniture piece and are ready to start finishing. DO NOT REMOVE Sanding Dust and leave your Osmo Brush in the cabinet. Instead use a Red Scotch Brite Pad to apply the initial coat of Osmo Polyx 3054 or Osmo Top Oil.Red Scotch Brite
  • Using pad create a slurry with the sanding dust and Osmo Polyx. Think of it as you are pushing the Polyx Oil into the pores. The abrasiveness of the Red Pad is perfect for smoothing out the top, creating a finer dust to fill the tiny pores in walnut, that will cause water rings if other methods are used. 
  • Once you have scrubbed the entire area of the piece that you are finishing, Use a White scotch brite pad with the same action to spread the slurry, then return to the start and buff using the white pad.
  • Now its time to remove excess finish. Using disposable rags, remove any finish remaining on you work piece. You want it to feel dry to touch. Change out rags until you have no residual finish showing up on your rag. 
  • Allow the finish to dry for 8-12 hrs. I would say 12 if at all possible. 
  • For the second coat, apply Osmo Polyx or Osmo Top Oil using the same method as the first, EXCEPT you will NOT use sanding dust, and You will only Use a White Scotch Brite Pad. Do not use a Red Pad for the Second Coat!

  • After Using this method on Walnut, This became my go to method to apply Osmo Polyx to all my furniture pieces. Give it a try, you will love the results.This will not only reduce water spotting on Walnut but will also give your piece an added luster.