Oh, while I think plastic polish is a better bet for your application than jewelers' rouge, there is a jewelery supply place called "Otto Frei" in an office building on Market street. They are a little hard to find and they have extremely inconvenient hours, but they carry a full line of jewelers' tools and supplies.<br>
<br><br><br><div class="gmail_quote">On Sat, Jun 6, 2009 at 7:19 PM, Noah Balmer <span dir="ltr"><<a href="mailto:noahbalmer@gmail.com">noahbalmer@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
TAP plastics probably sells graded plastic polishes that would to the job. Their NYC equivalents did, anyway. I used to use plastic polish to clean up the lexan balls I used for contact juggling, and it was capable of getting the surfaces to a beautiful glassy smoothness. I'd also suggest talking to TAP about making plastic lenses. They may have some other ideas besides grinding epoxy.<br>
<br>Epoxy dust is not the safest stuff. Because mixing ratios are never perfect, it contains uncured resin or hardener. Exposure often results in developing an allergy-like sensitivity. A dust/mist respirator is preferable to cheap paper masks.<font color="#888888"><br>
-N</font><div><div></div><div class="h5"><br><br><div class="gmail_quote">On Sat, Jun 6, 2009 at 6:37 PM, Josh Myer <span dir="ltr"><<a href="mailto:josh@joshisanerd.com" target="_blank">josh@joshisanerd.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Put another way: has anyone ground lenses out of epoxy? It's a bad<br>
idea on several levels, but the material is cheap and readily<br>
available, and I'm guessing epoxy dust is a lot less harsh on the<br>
lungs than glass dust.<br>
<br>
Does anyone have a source for really high-grit sandpaper in the city?<br>
I'm playing with figuring chunks of epoxy, but they come out cloudy<br>
with the highest grit paper Ace sells (1500). I think getting up to<br>
3200 might be sufficient to clear the thing up, but I'm not sure.<br>
Also, any leads on a place with a range of jeweler's rouges?<br>
<br>
It may be that the easiest way to get transparency is to recoat with a<br>
fresh layer of epoxy, but that seems fraught with misfiguring peril.<br>
<br>
Once I figure out how to restore them to transparent, there's a really<br>
trivial and fun way to hand-make toy lenses and optics on the cheap.<br>
Depending on just how bad epoxy dust is for you, it would even be<br>
suitable for craft hour at Hackindern, the noisebridge daycare.<br>
<font color="#888888">--<br>
Josh Myer 650.248.3796<br>
<a href="mailto:josh@joshisanerd.com" target="_blank">josh@joshisanerd.com</a><br>
_______________________________________________<br>
Noisebridge-discuss mailing list<br>
<a href="mailto:Noisebridge-discuss@lists.noisebridge.net" target="_blank">Noisebridge-discuss@lists.noisebridge.net</a><br>
<a href="https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss" target="_blank">https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss</a><br>
</font></blockquote></div><br>
</div></div></blockquote></div><br>