Gave the white spirits and wire wool ago with no luck.
I then re-sanded 80, 100, 150 grit which have improved things, but there's still a subtle splotch. I've prepped a 3rd sample board and going to try and re-create the blotches tonight and staining to see how it looks.
Thanks for the advice. I'll give it a try tonight.
The filler I used is Brummer Stopping Yellow Label - I actually think it's solvent based (says it designed for floors). It's set very hard, but water seems to loosen it up.
I'm in the process of restoring some original Victorian pine floorboards - they are currently sanded and pretty much ready for stain
This weekend I've filled a lot of old woodworm holes, tracks and general gouges caused over the past 100 years. I've used an ebony filler. But when sanding the...