CraftWEB Hot Glass Talk

CraftWEB Hot Glass Talk (http://talk.craftweb.com/index.php)
-   General Hot Glass Discussion (http://talk.craftweb.com/forumdisplay.php?f=4)
-   -   Cerium (http://talk.craftweb.com/showthread.php?t=12902)

Henry Halem 09-22-2021 10:35 AM

Cerium
 
Can anyone tell me what the going rate for cerium is?

Pete VanderLaan 09-22-2021 12:17 PM

There are substantial differences in price for cerium based on quality. A decent cerium will run you about $36.00 a lb or more. That's down a bit from two years back. High quality used as a PMD photo mask will likely cost more.

Cheap ceriums like lensmax will indeed cost you less but they also don't really polish well at all. They are made for polishing machines as a slurry. What you are polishing matters as well. Dave Hilty in Michigan bought a 5KG bag of the Bamboo brand I brought back from China. I don't know if he used it all but is no longer making glass. That stuff is the best cerium I've ever used.

Henry Halem 09-24-2021 09:59 AM

Cerium
 
Thanks Pete

Larry Cazes 09-24-2021 11:01 AM

Some of the stone lapidary suppliers have great deals on high quality Super Cerium. My friend has gotten it for me at both the Denver and Tuscon gem shows at just about $20 per pound. That community might be a good place to start.

Pete VanderLaan 09-24-2021 01:24 PM

The ones known as PMD's are the best, runaway with it. It stands for photo mask division and is used for computer boards etc. It's a lot like heroine really in how much the first pound gets "cut". As with other rare earths, it can come in a variety of concentrations given the inner electron ring capacity to dump electrons, the qualifying property of the Lanthanide group.

I'd just say don't buy a whole lot of it initially. See if it works for you. Once you're up to $1500 dollar pails, you're in the deep end of the swimming pool. I would sell the panda brand but I don't know if I'll ever get more.

Scott Novota 09-28-2021 07:14 PM

That Bamboo brand is amazing! I will take every chance I get to say it.

I mean, seriously 1/3 the time. If given the chance I would buy 5 more bags from Pete and I would likely never need to buy it again for the rest of my life.

Pete VanderLaan 09-29-2021 09:34 AM

Eveline would bring it in in her luggage and she has not been able to travel here for several years due to covid. I can't go there either. The govt does have restrictions on exporting it and I would not be inclined to test them. My last time out I had 15Kg in the suitcases and got flagged into a very bleak concrete room with a humorless soldier trying to figure out what it was. They presumed drugs. We did get out f there but it was dicey. Superox PMD was my choice of high quality Ceriums before Bamboo.

I did good bit of reading about them after Henry's question and the variance in price has a lot to do with what is attached to the raw metal Cerium. Ce4 is the material in use in glass shops. It's actually flammable. It is different colors depending on how much water it is bound to and there's the key. While it can be Ce02 it can also be Ce 0, or a carbonate which is poorly soluble The point there is that you may be paying for chemically bound water and thus the price seems lower. At one point it was $80.00 a Kg. I suspect that world production in Industry slowed sufficiently that demand went way down. Selenium has the same impact with a lot of price fluctuation.


All times are GMT -5. The time now is 06:19 AM.

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
CraftWEB.com. Opportunity Network. 2008. All Rights Reserved.