Tumbled Rock Formula From Norman Scott

• 1 week in 60/90 grit
• 1 week 120/220 grit
• 2 weeks in pre-polish
• 3 weeks in Polish

More Rock Tumbling Instructions:

• http://geology.com/rock-tumbler/rock-tumbler-instructions.shtml
• http://www.youtube.com/user/RockTumblerdotcom/videos?sort=p&flow=grid&view=0