Paul, I've used a bench grinder with a polishing wheel with great success. The key is to keep the key moving - meaning I make a complete pass of the key then if need be I make multiple passes. Although, one pass usually does the job - along with keeping a good amount of polish on the wheel. See inline pic ............ On 01/19/2012 05:29 PM, Paul Mulik wrote: > An older Baldwin concert grand that I tuned recently has really grimy ivories. I was thinking of polishing them with > bar polish (Schaff No. 425) and a buffing wheel on my bench grinder, however I have heard that using a grinder with > RPMs that are too high can burn the ivory. What speed is safe, and what is the best buffing wheel to use? > > Thanks, > Paul Mulik > Joplin > -- Duaine Hechler Piano, Player Piano, Pump Organ Tuning, Servicing& Rebuilding Reed Organ Society Member Florissant, MO 63034 (314) 838-5587 dahechler at att.net www.hechlerpianoandorgan.com -- Home& Business user of Linux - 11 years
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