Gene Olson's picture

Polishing anything

You are doing too much work and wasting paper and money.

When you go from rough to smooth the object is to get there as fast as possible. (unless you are really into penance)
The object is to even out the surface.

You grind down the high spots, that seems obvious.
Then you have scratches.

Get rid of scratches by sanding you need to sand with a finer grit until you reach the bottom of the scratch THEN STOP.

Now you have a new set of scratches to get rid of, and for those we need to use a finer grit.

The most efficient progression for stock removal is to double the grit each time.

If your deepest scratch is like something left by 24 grit paper, start with 40 grit.
Sand that scratch until your paper scratches a FINE line across the bottom of the offending scratch and
STOP
Take the 40 grit and apply a recognizable pattern, swirls, straight line, whatever. . .

Now split the grit size, go to 80 grit sand till the pattern left by the 40 grit goes away.
STOP
Now leave another simple pattern with the 80

now take a 160 grit sand off the the 80 pattern,
STOP make a new pattern

are we seeing a pattern here? 320, 1000 2000 rouge what have you

Gene Olson
Sculptor
Elk River, MN


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