LumberJocks

Reply by CharlesNeil

  • Advertise with us

Posted on Gray spots on black walnut after applying tung oil finish

View CharlesNeil's profile

CharlesNeil

2501 posts in 4717 days


#1 posted 02-22-2018 02:20 PM

What you are seeing are areas that the finish has soaked in , very common .
not sure what “tung oil” your using .. but the key is to get the first coats on and dry, so it doesnt continue to soak in .
Pure tung oils and Blo and so forth dry super slow , and can often be softened by additional coats , so be sure it dry.
You have to fill the porous grain, note the “grey” is around knots where the grain is much more porous .
A good “drying oil ” like Arm R seal, waterlox, minwax wipe on poly and Formbys Tung oil, will definately speed up the process.

So basically the simple answer is you need more finish , however , i hope you are doing the top as well as the bottom, applying a finish to one side can set up adverse drying conditions, and cause it to cup .
some painters pyramids would help , to keep the bottom elevated so air moves uniformly as well .
I often will stand a top like this to keep air movement balanced .


DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com