I’m guilty of oversanding but am not sure in what way to modify this behavior so that I continue to get good results without neglecting things I shouldn’t be…
The best way to help me out is to tell you I’m primarily dealing with softer woods-pine, poplar. I occasionally use oak, maple and ash though for painting purposes (90% of the sanding/painting ) it’s mostly poplar.
I sand both sides of everything before priming and two coat with finish paint, four coats or more for varnish. For most things, I’m using 120 grit and then hand-sanding with 220. After priming, I’ll use the 220 again before the finish goes on. Ditto for between varnish coats-though I’m switching to a finer grit for surfaces that won’t be dangerous underfoot.
Some people say, with flooring anyway, “work through all the grits” but this is surely unnecessary for most applications. What should I be doing with baseboard and other such trim? I do understand that professional carpenter/painters would buy primed wood but working on my house, I buy unfinished and proceed to sand everything first.
A painting friend of mine once said that both sides of a piece of lumber should be painted and I’ve done that ever since, including prepping with light sanding on the backside. I’m guessing this might only apply to exterior pieces? And that I might be able to get away with only sanding the exposed lumber for interiors?
Any pointers are most welcome.