But you want a smooth surface.
Knot holes in hardwood flooring.
You could also use a chisel but a plane is better.
Learn more about filling knot holes in flooring.
This is common for these larger holes and voids.
Occasionally you will get a piece of gorgeous wood that has voids or knots in it.
The main disadvantage of latex prefinished wood floor filler is that it shrinks and cracks over time so it s not a good option for filling large cracks gaps or knot holes.
This matched the hole knot perfectly and is no longer jagged edge that socks swiffer would get caught on.
I used a elmers brand hard drying wood filler in natural color let dry 8hrs then sanded fine grit then used a black wood touch up pen to color onto the dried filler.
I think i d layer it in and not fill it up all at once though.
You have two strong options.
Hickory floors with character knots.
Sanding is risky because there s a good chance you ll create a noticeable divot to the outside of your filled knot.
The solution is to fill the wood knots and voids with epoxy.
Wood flour cement or epoxy.
One will make knot holes disappear the other will highlight the knot while keeping it safely sealed.
Once the epoxy is dry and well filled leveling it out is swift work with a block plane.
The new stuff just isn t as tight as the older.
I have lots of tiny knot holes in part of my floor where we had to have flooring laid to match the other half of the room when we took down a wall.
You wouldn t want to add wood putty because it wouldn t retain the look of the knots.