>>7280172>I use Wave sanding sticks, 400 and 600 mostly.I have used the soft narrow wave sanding sticks for at least 5 years now (400 & 1000 grit mainly). I got sick of online stores running out of stock when i needed more, so I switched to basically the same thing but from aliexpress. one side is split 320grit/400grit, the other side is 3000grit. As you can see from the pic they are pretty big, they sell them in lots of 50 sticks for $17.50usd. I dont think i'll need to buy more for years.