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Boat Forum / Building / November 2005



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Burnished vs. Polished Bronze

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mike.e.worrall@abc.com - 24 Nov 2005 01:34 GMT
I have some deck hardware / fittings that are 'burnished' bronze, and
others that are 'polished' bronze (the difference being the latter have
a more finished/shiny/polished appearance - the former look like they
were simply plopped out of the mold).

By what process does one turn a 'burnished' piece into a 'polished'
piece?

MW
derbyrm - 24 Nov 2005 03:14 GMT
Rouge and sweat.

As I understand it, burnishing is just rubbing with a metal rod (or maybe
tumbling).  Polishing is like sanding, but one uses successively finer
grades of rouge and buffing wheels.

Roger
derbyrm@NOSPAMinsightbbNOSPAM.com
http://home.earthlink.net/~derbyrm

>I have some deck hardware / fittings that are 'burnished' bronze, and
> others that are 'polished' bronze (the difference being the latter have
[quoted text clipped - 5 lines]
>
> MW
Mungo Bulge - 24 Nov 2005 14:53 GMT
Rouge yes, sweat no. Polishing is easy, if you have a buffing wheel.
If you don't, they are easy to make, as they only require a motor
(furnace blower fan motor will do) a mandrel attachment and a couple
of medium sized buffing wheels (cotton, not felt). The bigger the
wheel the quicker the work. Then you polish with a heavy wheel and
polishing (cutting) compound, then you buff it with a softer wheel and
medium buffing compound and then you buff it with a softer wheel and
fine buffing compound. You should have three wheels and don't mix them
up, i.e. don't use more than one rouge (polishing compound) on a
wheel. If they are already burnished, you can probably get by with
just two wheels, Emery or Tripoli compound and White Rouge compounds.
My preference is 8" spiral sewn wheel for cutting (first rough cut),
and a 80 Ply Thick Buff for the mirror finish.
Also available:
http://technicalvideorental.com/rental_2.html The Art of Buffing
http://www.practical-sailor.com/newspics/charts/853polisher.pdf

| Rouge and sweat.
|
[quoted text clipped - 15 lines]
| >
| > MW
Brian Whatcott - 24 Nov 2005 14:21 GMT
>I have some deck hardware / fittings that are 'burnished' bronze, and
>others that are 'polished' bronze (the difference being the latter have
[quoted text clipped - 5 lines]
>
>MW

Hold the piece against a rotating "mop"  (a cloth wheel) loaded with
progressively finer abrasive powders from a glue stick.

Brian Whatcott
Dave W - 25 Nov 2005 14:53 GMT
You are right, burnished is straight from the mould with little attention to
finish.  In order to get to polished from burnished, one uses (in order)
files, emery paper in progressivly finer grits and finally buffing
compounds.  It is a lot of work but worth it.  I prefer a mixture of
polished and burnished, even on a single casting, the contrast is nice.
Dave
mike.e.worrall@abc.com - 29 Nov 2005 16:28 GMT
Brilliant replies - thanks fellas - the Usenet at its best!

MW
 
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