Dishwasher detergent chews sanding belt gum

While running a bunch of pine boards through my stationary belt sander, the sandpaper gummed up rather quickly. I tried a number of methods to clean the sandpaper without success. Then I realized that the sap and wood are simply organic matter—a perfect target for dishwasher detergent. 

After dissolving a detergent pod in hot water, I submerged the filthy belt and let it sit for about 15 minutes. Using a stiff, nylon brush, the residue came off easily. After a final rinse in warm water, I hung the sanding belt to dry. 

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