<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body>
Props of elemental zinc are likely very different from the compound zinc oxide. <div>Keith</div><div>Chemist<br><br><br><div class="yahoo-signature"><a href="https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661">Sent from the all new AOL app for iOS</a><br></div><br><p class="yahoo-quoted-begin" style="font-size: 15px; color: #715FFA; padding-top: 15px; margin-top: 0">On Saturday, September 30, 2023, 4:45 PM, Bob Spidell <bspidell@comcast.net> wrote:</p><blockquote class="iosymail"><div id="yiv5251287396"><div>
Same with any grinding compound: The components are selected for
their shape, hence 'cutting' ability, hardness, purpose, cost, etc.
A compound with large particles with sharp edges will cut deeper and
faster than one with particles of a softer and/or more rounded
shape. The kit I bought came with a paste consisting of rhyolite and
whatever semi-liquid was used to make it a paste; it appears
aluminum oxide is also used. <br clear="none">
<br clear="none">
A coarser compound will remove deeper scratches, but leave its own
scratches. You can start with a coarser compound to remove larger
scratches, then switch to a finer compound to remove smaller
scratches, and so on; just like you might start rubbing paint--or
filler--with 320grit sandpaper, then 400, then 600, 1200, etc. Some
polishing compounds do that 'automatically,' they start with larger
particles which themselves break down to smaller particles and
successively smooth the surface. McGuiars (sp?) has several
compounds, all graded on a thermometer-like scale for their cutting
(deep) or polishing (fine) characteristics.<br clear="none">
<br clear="none">
I appears the lapidary (mineral-polishing) crowd has lots of
discussion re: best compounds. Cerium oxide is mentioned a lot,
rhyolite some, but I didn't see any mention of zinc oxide. Zinc is a
soft metal and may not lend itself to being a good polishing
compound, for glass anyway. Cost will (always) be an issue, rhyolite
may be a better compound than cerium oxide but may cost more, or
vice versa.<br clear="none">
<br clear="none">
bs<br clear="none">
<br clear="none">
<br clear="none">
<div id="yiv5251287396yqtfd83629" class="yiv5251287396yqt1317478113"><div class="yiv5251287396moz-cite-prefix">On 9/30/2023 9:46 AM,
<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:llennep@verizon.net" target="_blank" href="mailto:llennep@verizon.net" class="yiv5251287396moz-txt-link-abbreviated">llennep@verizon.net</a> wrote:<br clear="none">
</div>
<blockquote type="cite">
</blockquote></div></div><div id="yiv5251287396yqtfd64874" class="yiv5251287396yqt1317478113"><div><div style="font-family:Arial, Helvetica, sans-serif;font-size:16px;" class="yiv5251287396ydpc19107b0yahoo-style-wrap">
<div dir="ltr">What is special about cerium
oxide? Why not use zinc oxide?</div>
<div><br clear="none">
</div>
</div>
<div id="yiv5251287396ydp975197d1yahoo_quoted_6475527098" class="yiv5251287396ydp975197d1yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div> On Saturday, September 30, 2023, 04:20:50 AM EDT, Mark
Donaldson <a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:ardmorebusiness@xtra.co.nz" target="_blank" href="mailto:ardmorebusiness@xtra.co.nz" class="yiv5251287396moz-txt-link-rfc2396E"><ardmorebusiness@xtra.co.nz></a> wrote: </div>
<div><br clear="none">
</div>
<div><br clear="none">
</div>
<div>
<div id="yiv5251287396ydp975197d1yiv6310450809">
<div>
<div class="yiv5251287396ydp975197d1yiv6310450809WordSection1">
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">Ira,</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">I
have a spare windscreen with wiper blade ‘rainbow’
scratches on both sides. To remove them I have
purchased some CERIUM OXIDE to make a paste and
hand-polish them out. </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">The
people at the glass company told me the process
will be slow (a lot of elbow grease) but applying
it to a soft rotary pad will speed up the
procedure.</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">My
cost equates to about US $15 for 4 ounces. That
amount should do the whole windscreen.</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">Here
is a useful YouTube link: </span><span style="font-family:sans-serif;"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://youtu.be/4ZJPPC1ak50"><span style="color:#0563C1;">https://youtu.be/4ZJPPC1ak50</span></a></span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"><br clear="none">
</span><span style="font-family:sans-serif;"></span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><br clear="none">
<span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;">
</span><span style="font-family:sans-serif;color:#1F497D;"></span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;">I
hope this will help.</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;">Mark</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;">Ardmore</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#003399;">NZ</span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><span style="font-family:sans-serif;color:#1F497D;"> </span></p>
<div id="yiv5251287396ydp975197d1yiv6310450809yqt18608" class="yiv5251287396ydp975197d1yiv6310450809yqt2016400307">
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm;">
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> i erbs
<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:eyera3000@gmail.com" target="_blank" href="mailto:eyera3000@gmail.com" class="yiv5251287396moz-txt-link-rfc2396E"><eyera3000@gmail.com></a> <br clear="none">
<b>Sent:</b> Saturday, 30 September 2023 5:08
AM<br clear="none">
<b>To:</b> Bob Spidell
<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:bspidell@comcast.net" target="_blank" href="mailto:bspidell@comcast.net" class="yiv5251287396moz-txt-link-rfc2396E"><bspidell@comcast.net></a><br clear="none">
<b>Cc:</b> Ahealey help
<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:healeys@autox.team.net" target="_blank" href="mailto:healeys@autox.team.net" class="yiv5251287396moz-txt-link-rfc2396E"><healeys@autox.team.net></a><br clear="none">
<b>Subject:</b> Re: [Healeys] Windscreen
scratches</span></p>
</div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"> </p>
<div>
<p style="margin-bottom:12.0pt;" class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">I got
nothing to loose. Might as well give it a try.
BTW, this is on my 67B. Those windscreens are
spendy to replace </p>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">Ira
Erbs<br clear="none">
Milwaukie, OR<br clear="none">
1959 Austin Healey 100-6<br clear="none">
1967 MGB Roadster</p>
</div>
</div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"> </p>
<div>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">On
Fri, Sep 29, 2023, 9:06 AM Bob Spidell <<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:bspidell@comcast.net" target="_blank" href="mailto:bspidell@comcast.net" class="yiv5251287396moz-txt-link-freetext">bspidell@comcast.net</a>>
wrote:</p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm;">
<div>
<p style="margin-bottom:12.0pt;" class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">I
used a kit with some sandpaper, a mild
abrasive and an attachment for a drill to
polish my BN2's windshield. IIRC, I got it
from Eastwood:<br clear="none">
<br clear="none">
<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.eastwood.com/glass-polishing-kit-for-deep-scratches.html" class="yiv5251287396moz-txt-link-freetext">https://www.eastwood.com/glass-polishing-kit-for-deep-scratches.html</a><br clear="none">
<br clear="none">
The 'rule-of-thumb' is if the scratch can be
felt with a fingernail it can't be removed,
but my car had mostly mild wiper wear and
the kit did the job well enough I can live
with it.<br clear="none">
<br clear="none">
Bob<br clear="none">
<br clear="none">
</p>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">On
9/29/2023 3:41 AM, Robert Markovich via
Healeys wrote:</p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;">
<p style="margin-bottom:12.0pt;" class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">There
are some some places that polish
windshields. But ultimately it may be more
cost-effective to simply replace. Triplex
is the brand to use; an OEM manufacturer
that supplied them back then. The rest
often don’t fit right and eventually crack
from stress points, as I’ve found. <br clear="none">
<br clear="none">
</p>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://apps.apple.com/us/app/aol-news-email-weather-video/id646100661">Sent from the
all new AOL app for iOS</a></p>
</div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">
</p>
<p style="margin-top:0cm;"><span style="font-size:11.5pt;color:#715FFA;">On
Friday, September 29, 2023, 2:01 AM, i
erbs <a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:eyera3000@gmail.com" target="_blank" href="mailto:eyera3000@gmail.com"><eyera3000@gmail.com></a>
wrote:</span></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;">
<div id="yiv5251287396ydp975197d1yiv6310450809m_3319096111410648268yiv1571707645">
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">Howdy
all </p>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">Is
there any proven way to remove
wiper blade scratches from a
windscreen?</p>
</div>
<div>
<p style="margin-bottom:12.0pt;" class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">Thanks
all </p>
<div>
<p class="yiv5251287396ydp975197d1yiv6310450809MsoNormal">Ira
Erbs<br clear="none">
Milwaukie, OR<br clear="none">
1959 Austin Healey 100-6<br clear="none">
1967 MGB Roadster</p>
</div>
</div>
</div>
</div>
<br clear="none">
</blockquote>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br clear="none">
</div></div></div><blockquote></blockquote></blockquote></div>
</body></html>