Author Topic: Where do you buy your grit, pitch and polish from?  (Read 212 times)

Owen Richter

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Where do you buy your grit, pitch and polish from?
« on: December 29, 2017, 06:04:51 AM »
I am looking to pick up some ATM supplies. Anyone have a good place to get some very good quality Gulgoz pitch, grit, Cerium Oxide?

How much CeO will I need for polishing a 18" mirror?

thanks in advance,
Frank



tranasrixpans

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Re: Where do you buy your grit, pitch and polish from?
« Reply #1 on: January 03, 2018, 07:16:40 PM »
GotGrit or FirstHandDiscovery spring to mind as reliable sources.

tanktositsoft

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Re: Where do you buy your grit, pitch and polish from?
« Reply #2 on: January 04, 2018, 05:31:56 AM »
You can also ebay some of the stuff.

Jairo Zilinskas

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Re: Where do you buy your grit, pitch and polish from?
« Reply #3 on: January 04, 2018, 03:43:12 PM »
I bought my stuff mostly from older ATMs getting rid of stuff they don't need

vetedhaubulk

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Re: Where do you buy your grit, pitch and polish from?
« Reply #4 on: January 04, 2018, 04:24:56 PM »
How is the quality of the ebay stuff?
Also, the rock tumbling community sells CeO, would it be good to use or is it not optical quality?

Could I mix the CeO and just take the upper portion of liquid to obtain the finer sized particles helping to alleviate sourcing issues?

tingperbeachfnar

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Re: Where do you buy your grit, pitch and polish from?
« Reply #5 on: January 08, 2018, 12:19:16 AM »
Try HIS Glassworksfor grit and/or CeOx. Excellent packaging, pricing, and shipping.

Brian Olatunji

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Re: Where do you buy your grit, pitch and polish from?
« Reply #6 on: January 11, 2018, 10:20:07 AM »
I think the ebay stuff is fine. With the coarser grits, I suppose you can't really go wrong anyways. For the finer grits, I *think* I actually happened to get MicroGrit from the ebay seller, which is the best kind of white aluminum oxide grit. I also bought the Cerox from ebay and I haven't had any problems with it as far as I know (I suck at figuring, but that's not the fault of the Cerox. )

Nassim Zaragoza

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Re: Where do you buy your grit, pitch and polish from?
« Reply #7 on: January 12, 2018, 01:24:43 PM »
<sub>I have rusty salt and pepper shakers of grit and pitch containerswith Edmund Scientific Barrington, New Jersey on them. ;-)</sub>

<sub>Don</sub>

<sub>Hasn't theCalifornia Air Resources Board banned pitch and turpentinebecause of high VOCs?</sub>

Edward Johnston

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Re: Where do you buy your grit, pitch and polish from?
« Reply #8 on: January 12, 2018, 06:49:20 PM »
Mark, I did not know CeO came is so many sizes. At first, I was thinking of getting rouge because it was cheaper and more importantly it produced a finer polish. I did not like the messiness though. I think rouge is 0.7 micron in size. From HIS, they sell finer particle size CeO. Can that be used instead of rouge to make as fine a polish?

Also, would it take too long to polish such that it would be advantageous to buy a 1-2 micron CeO for initial polishing in addition to the finer CeO?

how much CeO do you all suggest I purchase to polish and figure an 18" mirror? I think this is the last piece of the puzzle for me.

thank you all for helping this newbie out.

sincerely,
Frank

Nick Nisianakis

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Re: Where do you buy your grit, pitch and polish from?
« Reply #9 on: January 16, 2018, 06:53:16 AM »
One pound was more than enough for a 14" for me. 1.5 pounds will be enough and give you some extra for a 18".

lehroldwebbdep

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Re: Where do you buy your grit, pitch and polish from?
« Reply #10 on: January 20, 2018, 01:46:51 PM »
For polishing?

James Scaturro

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Re: Where do you buy your grit, pitch and polish from?
« Reply #11 on: January 21, 2018, 12:56:21 PM »
I thought I used CeO for both polishing and figuring and I thought it was the same stuff. Is that correct .?

is the quantity too much for polishing and figuring?

frenafverbi

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Re: Where do you buy your grit, pitch and polish from?
« Reply #12 on: January 26, 2018, 03:26:12 AM »
I use a lot more CeOx than most people  and for an 18" mirror 1/4 lb is more than enough. Besides, it's expensive unless you buy 20 kg pails from Salem Distributing ($670 currently).

Joel Hall

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Re: Where do you buy your grit, pitch and polish from?
« Reply #13 on: January 29, 2018, 11:18:01 PM »
Will the fine CeO polish up like rouge? I think they sell a 0.6-0.7 micron CeO. Oddly enough Stellafane suggests 1.5 lbs for a 14" mirror but they are talking about ~3 micron size.

swadadanun

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Re: Where do you buy your grit, pitch and polish from?
« Reply #14 on: January 31, 2018, 12:58:54 PM »
You'll have to try them and compare. I have some red rouge I can send you (or half of what I have) if you like. The sub micron CeOx preparations exhibit a huge amount of polisher drag IME that makes them prone to stick (bad) or grab (worse) but not easy at all to use by hand.