Refinishing a floor with dominant cracks makes the job a bit more difficult but there are a few ways to disguise the imperfections.
Fill old pine floor before stain.
I sand the floor to 60 grit empty the dust bag then sand the floor with 80 grit.
The planks are close to 3 4 inch they are nailed into the joists.
If you want to refinish sanding pine floors is easier than sanding hardwood.
How to fill voids and knot holes in wood.
I have 6 inch old pine plank flooring in my living room.
Repeat for each gap and allow the stain to dry completely before walking on the floor.
Before you start filling you should have completed the edge sanding to a 50 or 60 grit and sanded the main body of the floor with at least 80 grit.
Retain the cap to use if you have any leftover epoxy.
Press the cap out of the plungers before trying to depress the plunger.
Then dip a clean rag in gel wood stain and wipe it over the filler.
Pine is a softwood so an old pine floor is usually distressed which is part of its charm.
Finish your wood with stain and or topcoat of your choice.
Wipe away any excess wood dust.
How to refinish a hardwood floor with large cracks.
That way you have only fine dust from the 80 grit.
When the finish gets dull you can restore it by a screen and recoat.
Home antique heart pine flooring how to fill voids and knot holes in wood.
100yr victorian house which also is the subfloor.
Filler for pine plank.
It needs regular sweeping and mopping to protect the finish.