Quote Originally Posted by WadePatton View Post

You'll want as flat a surface as possible to mount your sandpaper. Glass or granite is very good, less perfect things can work. Grind two bricks together and you'll get a flat surface where they meet, eventually.
Thanks for the response! I've been doing my best to search and find all my answers there's just so many different places to find information it's pretty great but a little overwhelming I have a good chunk of granite to do the lapping on so that's good to know!What would be the best way to stick the sandpaper on the granite so it doesn't move?