Sanding stripping old uneven plank floors pine.
Floor sanding uneven boards.
Spot fill any areas from which.
So countersink all nails by at least 1 8 in.
Use the edger and a 50 grit disk to sand the edges.
Sand the floor again with the drum sander this time using 50 grit sandpaper and sanding parallel to the boards.
When you re sanding nail heads will rip the sanding belt which costs you money or gouge the sanding drum which costs you more money.
If you have really really uneven floorboards you could start by sanding with the large drum sander diagonally to the floorboards to even things out and then move on to sanding in the direction of the boards.
And if you sand boards before cutting or assembly you can use the tool that does deep sanding fastest.
To detect nails drag a metal snow shovel across the floor upside down.
Testing lower grit paper on an uneven spot.
Nail down any loose boards with finish nails.
It was something like a stud finder but actually measured the thickness of the wood.
The initial sanding removing scratches dents and milling marks is the heaviest sanding.
Sanding whole boards also eliminates the repetition of stopping starting and setup for individual parts.