Finishing with Tru-oil - Do not rush this process.

Before you add the bridge, sand the whole 'ukulele starting at 80 grit until you get your desired thickness on the soundboard. Be sure to put some pencil marks around the whole body so you know how much material you are removing. Use the following progression of sandpaper, 80, 100, 120, 150, 180 then stop at 220.

Get a damp cloth and wipe the 'ukulele and let dry. There will be little hairs that rise when it dries, sand and repeat process at least twice until you do not feel any more wood hairs after you wipe the uke with a damp cloth.

Now you can progress to 320 and even up to 400 for a smooth finishing surface. You want to make sure that with each progression of sandpaper you remove the scratches from the last sandpaper grit.

Once you reach your desired smoothness,  you are ready to add your first coat of finish.

Only apply 2 coats of oil per day. Wipe on then wipe off immediately. Repeat process until you reach your desired shine.