Waterlox® ORIGINAL Tung oil finishes are penetrating oils that build up to a film and bring out the natural patina (beauty) of wood. As such, it is imperative that the sanding of the project be completed with precision and accuracy. Sanding imperfections and poor sanding, like the character of wood grain, can be highlighted as the project is finished.
In order to test a sanding job, you can wipe the area in question with mineral spirits. When the mineral spirits is wet, it will provide a preview of what the wood will look like when it’s finished. If it shows the sanding imperfection, then you should sand further.
