What you're seeing is wood filler underneath as I'd already started sanding back when I thought I should ask here.
Thickness sounds like it might be it. So the solution I guess is to make sure I do thinner layers for the next two coats.
Frustratingly in the good light I've also spotted some poor smoothing of the filler, so need to fill and paint that. Is there a easy mix paint type filler rather than a proper wood filler? Kind of thinking of something like high build primer spray that you'd used for vehicle bodywork.
Cheers.
What you're seeing is wood filler underneath as I'd already started sanding back when I thought I should ask here.
Thickness sounds like it might be it. So the solution I guess is to make sure I do thinner layers for the next two coats.
Frustratingly in the good light I've also spotted some poor smoothing of the filler, so need to fill and paint that. Is there a easy mix paint type filler rather than a proper wood filler? Kind of thinking of something like high build primer spray that you'd used for vehicle bodywork.