Sooner or later you will want a lap for fast preforming. I use a 220 grit solid steel, but a standard steel or even a topper will work. Speaking of toppers, you will find a master lap useful for various things. Just remember that a coarse lap does unseen subsurface damage, and you must leave plenty of material for the finer laps to eliminate this damage. Go to http://agmc.info/index.php?page=lapidary and download “Attaway_Steve-Fine_Cabinet_Makers_Don’t_Use_Chain_Saws.pdf”. You’ll see some other interesting articles there, too.