Ahh, bench grinder. How many HP and how many amps does it put out? The old bench grinder is tricky to polish with because they are usually under powered and you can't really lay into them with the part, thus taking much more time than needed to polish a part. If you are serious about polishing i suggest looking into something that's between 1/3-1HP and makes 6-10 amps atleast. What kind of parts are you polishing? This dictates how big you really need, but its always better to have more power than you need, just incase. As far as loading the wheel, you want the grinder to come to a slow hault, meaning a 2-3 second period from when you flick the switch keeping the same constant pressure. Chances are your grinder will stop immediatly. Sorry for the jumbled post, i know i threw a lot out there but ask away with those questions.
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