OK, I am pretty technical, but I have to admit (as Grandma used to say), "you couldn't fill a thimble with all I know about" 3D Printing... Trust me, that was one of the more socially acceptable things she used to say. I was just curious to know if you can use fine grit sandpaper and carefully smooth out the ridges on things like this after they've been printed?
Absolutely, it's a piece of plastic so you can sand, cut, paint all you want.
The pictures always seen to make them look rougher than they are.
A common practice with 3D printed models that I do a lot of times is put them in a acetone vapor bath that smooth's
them out, makes them more waterproof, and gives it a solid finished look.