Drying a grinder depends entirely on the type of grinder. This answer addresses several common grinder types.
Drying a Spice or Coffee Grinder
To dry a spice or coffee grinder after cleaning, simply allow it to air dry completely on a paper towel or dish towel for a few hours. Ensure it's thoroughly dry before using it again to prevent clumping or damage. Source
Drying a Herb Grinder
While the method for drying a herb grinder isn't explicitly discussed in the provided sources, the principle remains the same: Thoroughly dry any residual moisture. This is critical to prevent mold and ensure the next use is optimal. Air drying on a clean towel is recommended. The sources indicate that leaving cannabis in a grinder is not advisable due to lack of airtightness, leading to drying out. Source
Drying a Bench Grinder (Wet/Dry)
Bench grinders are used for metalworking and woodworking. There are two main types to consider:
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Wet Grinders: These use water as a coolant and lubricant during operation. They typically don't require additional drying beyond ensuring any water pooling on the surface is wiped away. The benefit of using water in these applications is to prevent overheating and maintain a sharp edge on tools. Source
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Dry Grinders: These do not use water. After use, allow the grinder to cool completely before handling. Cleaning and maintenance should focus on removing debris, but no specific drying is necessary aside from passive cooling. Using water to cool the blades during high speed dry grinding is recommended. Source
