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Letter 24024
Alternate method of SS mirror polishing
other than buffing
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At present we are finishing our SS materials with buffing method,
that is very labor orientated and time consuming too. For a small
batch it requires long time to finish. Now my question is, is there
any easy and cheaper process other than buffing which can help us to
produce our SS materials with better mirror finishing and will take
less time to produce?
We will highly appreciate a quick response.
With Best regards,
Intezar Hossain
bathroom fittings - Dhaka, Bangladesh
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Nothing can top a hand buff finish in appearance. However, you can
drastically reduce your processing time by using mass finishing
equipment. Then again, a lot has to do with the surface finish of
your parts prior to processing. A rough surface of over 35 RMS may
still require a belt or wheel to reduce the surface profile. The next
step would be a mass finishing system. The machine size and system
depends on the volume of parts needed to be produced in a given
period of time. Next, the media depends on the metal being processed.
You may need to do more than a one step operation to get a mirror
finish, but it still may not match a hand buffed finish. If that is
still needed, a very short hand cycle maybe required.
December 27, 2008
It sounds like you are buffing before the surface has been brought
to the proper finish.
Remember that each step to a finer grit should only happen after the
current grit has removed all scratches left by the proceeding
process. Moving prematurely will result in both taking a long time to
polish, and reducing the quality of the finish.
Any time a step takes too long, it is probably because you didn't
take long enough on the previous step(s.)
Check your surface under a 10-20x magnifier and choose the grit which
is sized one size smaller than the largest scratches you see.
Any time it seems to take too long, try stepping back one or two
levels of grit.
There really is no way to get a better surface finish I know of,
chemical polishing methods depend upon the mechanical surface to be
smooth first.
Charles M. Barnard
- Menomonie, Wisconsin
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