On 7/17/2016 9:44 AM, John McCoy wrote:
Electric Comet wrote in news:nmejmk$qpb$1
@dont-email.me:

was looking at an orbital air sander and the claim was that it did a
better job then similar electric sander

the only thing i could think of that would be different was that it was
higher rpms but my electric goes plenty fast


marketing claim or is there really something to it

American Woodworker did a review of palm sanders years ago,
and included 2 or 3 air models in their selection.

As I recall, they found the air sanders, to be lighter, easier
on the hands because of less vibration, and more powerful.
They also noted the possibility of getting lube oil on the
work from the air exhaust (I guess they had an in-line oiler
in the air system they were using).

John



I would imagine that for the average woodworker with out a 60 gallon
plus compressor tank that the volume necessary for an air sander would
be out of reach except for a few seconds of use at a time.

Air consumption of one of the Mirka air sanders is 475 l/min. IMHO a 25
gallon compressor is not going to be able to keep up.