If you ever wondered if the Cerium oxide polish kits that
Eastwood & Whitney sells is any good...
I would say "yes", but it took a little while to figure out the
best technique.
My case was two worn wiper "frosted" arcs on the driver's side.
My good windshield cracked and this was my spare.
The kit comes with a 3 inch felt pad and a jar of oxide powder.
The polishing takes time. Probably took me a hour or so..
What I have found is that firm pressure and full speed of the drill
made things move along at a reasonable rate.
To do this means you must have the glass well supported.
I used a big piece of Styrofoam from a packing box and placed
this under the area I was working on. It sort of crushed to the
shape of the glass.
I also found it helpful to used some tape on the opposite side of
the glass to mark off the area of concern. Once the glass is
coated with the slurry it's a little hard to tell where things are and
you don't want to waste time polishing areas that don't need it.
A squeegee is useful to help reclaim some of the slurry. I think if I
were to do it again I would build up a clay dam around the area to
keep the slurry confined.
A plug powered drill is best. You need the torque. The pad will
want to orbit out of control, but if you bear your weight into it and
keep it perpendicular to the glass it will stabilize. Once you get
good you will run the drill full speed.
Every so often you spray the area with water to keep the slurry wet.
Final Result: All the frosting is gone, there are a few heavier scratches
that remain but they are hardly noticeable.
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