My PA50 shop manual features a graphic of a air-blasting spark plug cleaner.
I have read that the standard grit in these cleaners will abrade the ceramic surface of spark plugs and that glass beads should be used instead.
Question: Is it worth the investment of about $15...plus the cost of glass beads...in such a device?
I wonder how often a plug may be reconditioned before the ends of the electrodes are rounded off and the plug must be discarded?
In my area, a moped plug costs no more than two bucks. I haven't run a 'ped long enough to amortize the investment in such a cleaner.
Is anyone out there using such a machine? I would be interested in their comments.