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Originally Posted by PhiLW Hi all, new to the site, just like to start off by saying that i'm addicted after seeing some of your efforts on cars and i'll be getting a PC in the new year because of it all.
I have a question about random orbital buffers/sanders.
I have a RO sander which apparently spins at between 4000 and 12,000 rpm, i know that the PC is between 2,500 and 6,000 so would i be ok using my buffer on its lowest setting of 4000?
I'm a complete newbie at this and never seen someone use a RO on their car before but spinning at 4000rpm seems to be spining a lot.
Thanks in advanced. |
Phil,
There is a big difference between OPM and RPM. Oscillations Per Minute is not a very accurate measurement because it does not tell you anything about how much the pad travels.
Several factors determine if an orbital (dual-action) tool will make a good polisher:
1. Strength of the motor (the AMP rating is a pretty good indicator)
2. Head throw (offset)
3. Machine balance (how much energy goes into "buzz" vs. the pad)
4. OPM range... higher is not always better
Most 6" sanders with a head throw of 3/8" or better will work okay as a polisher. The Porter Cable offers the most pad flexibility due to its head design. That does not mean it is the best machine or the only machine that will do the job.
db