From digest.v7.n841 Mon Dec 29 13:01:40 1997
From: "Alan Alfano"<Alan.Alfano_at_SNET.com>
Date: Mon, 29 Dec 1997 10:19:51 -0400
Subject: Re: Polishing Lenses
In v07.n840, From: Jonathan Lukens <lukensj_at_graham-ed.com>
>>Also you might not want to use steel wool on the lenses - they're
>>plastic and this might only make things worse. I just polished mine
>>with some tripoli compound on a nice rag wheel. Worked like a charm.
>Can you elaborate on the tripoli compound?
Plastic is a delicate item, IMHO start with the least abrasive solution
first. Do not use steel wool.
- Consider using Meguiars plastic polish (less abrasive), or Meguiars
plastic cleaner (more abrasive than polish).
Other sources for plastic cleaner/polish would be a motorcycle shop (used
for helmet visors).
With a very soft cloth use side to side motions, as a circular motion
creates a twinkling effect in the sun light.
I was able to restore my original Austin-Healey reflectors using this
technique to as new condition. Consider this for soft plastics.
- The Eastwood company (in Pennsylvannia) sells a plastic buffing wheel
and plastic buffing compound.
IMHO, do not use Tripoli compound. Tripoli is used for removing light
scratches in aluminum, brass, copper, and die cast.
The trick with plastic is to not let the heat build up and to make sure
that the compound is doing the work, not a dry buffing wheel.
The plastic buffing wheel is stringy which dissipates heat quickly.
With this technique, you will have to be careful with the raised lettering,
as you can easily buff them smooth.
Use masking tape to protect the lettering. Clean the lettering with
Meguiars plastic polish. Removing the lettering could be a desirable
I was able to restore my original Healey plastic knobs to as new condition
with this technique.
It also works well on 'bakelight' plastic from the 1950s.
Consider this for hard plastics.
- If there are deep scratches, use 1000/1500/2000 grit wet-dry sandpaper
with a rubber block to get it leveled.
Then use the plastic buff/compound to get the gloss back.
Disclaimer: no financial gain/interest with the Eastwood Company.
BMW CCA #30492
1988 BMW 325iX
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1956 Austin-Healey 100M (2)