Replies

1. 
   pantalones868 | Oct 03, 2021 04:51am | #1

   I can't see anything in that photo but is your problem lines or bleeding? If it's bleeding did you prime before paint? I would have used a good 8 grade primer or possibly a pigmented white shellac to seal the putty and you still can prime over paint and paint over that.

2. 
   _mj_ | Oct 03, 2021 08:31am | #2

   Wood putty shrinks as it dries, and transfers some of its water to the surrounding wood, which expands with the moisture. If you do not wait until the whole shebang is dry (longer than what's on the putty can) the materials will still be changing after you have sanded it smooth. This assumes a water-based putty of course.

3. 
   john_c2 | Oct 03, 2021 04:38pm | #3

   I can see it. Can you feel it? Close your eyes and run your fingers over it. If you can feel it, it needs more filling. Or just leveling with a dead-flat block and very fine paper. You might just need to remove a little paint to level it.

   That's if it's a leveling issue, not a bleed through problem.

4. 
   elmaduro | Oct 03, 2021 11:26pm | #4

   I would spackle over it, sand, and repaint. The spackle will fill the void left by the wood putty shrinking.

5. 
   rob_ss | Oct 04, 2021 04:06am | #5

   As @John_C2 says, if you can feel it, you will see it.
   This is best filled with fine filling compound. I am not sure what is available in the USA, but a gypsum based product such as Polyfilla or Gib plus 4 can be used to cover these well. Provided the surface is well-keyed first and the layer is thin, they can do well. Wood putty is not really an ideal option here. It tends not to adhere well to paint and is more granular in structure than is desired.
   You can also use a thin layer of epoxy putty (builder's BOG or car body filler are fine)
   In both cases, you need to fill about twice as wide as the groove you are filling and feather the edges.
   Gypsum based products adhere well and are very easy to sand (use no coarser than 180 grit, and that only until close, then 240 to finish) Epoxy sets faster (sandable in an hour or so) but is harder to feather well as sanding heat can soften it and can cause it to lift, especially where it is thin.

1. 
   john_c2 | Oct 04, 2021 10:10am | #6

   I hate wood putty. Stainable is a lie. It might accept stain. But never will it turn out the same color as the surrounding wood.

   If I am painting, I use joint compound as filler. It's dirt cheap, dries fast, and sands super easy, and takes paint perfectly.

6. 
   user-7063600 | Oct 04, 2021 04:37pm | #7

   if you are painting try auto body filler. minimal shrinkage durable and easy to shape.