Originally Posted by DrCharles
I always wondered if all the abrasive can be removed from the plug body, or does some of it end up in the cylinder...


The units like the one I pictured above have 2 settings, 1 for the abrasive, and one for straight air. I have usually found a piece or two of the abrasive up inside between the ceramic & metal. A blast with a regular air nozzle, dental pick or similar device quickly dislodges them. If you're really concerned a blast with brake clean or alcohol will get any remaining dust. up beer