Often when wood parts are cut out, they have sharp edges, saw cutting marks, and burrs on the edges (see picture) that need to be cleaned up. While this can often be accomplished quickly with hand sanding, in a production environment, the size and quantity of parts can quickly make this impossible.
Most deburring operations are done with traditional pre-formed tumbling media in wet processes. Using water with wood parts can, for obvious reasons, be problematic. A traditional dry process using Hardwood Tumbling Media and Finishing Creams will also not work as the wood parts will absorb some of the Cream and become discolored or coating with the Cream.
The best method to clean up wood parts is dry tumbling with Hardwood Media and a dry abrasive. What we have found works best in either White Aluminum Oxide Grit or a formulated abrasive media like our Pegco J-0.5 Premium Treated Tumbling Media.
Depending on how much material needs to be removed and how much edge rounding is desired, the cycle times can vary widely. In this case, the parts were tumbled for more than 24 hours to get the result in the picture.