Crucible suggestions

I need a crucible I can seal so that no gas may escape and cannot be made of metal and must be able to hold liquids. Porcelain is out. Any suggestions?

E-thor wrote:

I need a crucible I can seal so that no gas may escape and cannot be made of metal and must be able to hold liquids. Porcelain is out. Any suggestions?

What about the granite ones?

Where do you get those and how do you seal them?

i actually think its graphite, not granite. and i am not sure as i have not bought them. but i have come across them somewhere online. have you tried the usual? ebay, amazon, etc.

I have tried graphite- I thought that might be what you meant I suppose mine was not that dense and may have been unable to hold liquid. My main concern is sealing it so no gas may escape. I have unable to do this with Kaowool solution others have mentioned.

what about quartz? they cost more but should handle what you need.

quartz is great but depending on what your using it for you can get away with something like this possibly:

Clay / Refractory crucible
https://www.youtube.com/watch?v=E3my6-nxFjM

Seasoning a Crucible
https://www.youtube.com/watch?v=G0exOpsO-xY

Thanks Delphinny- I think the refractory one is the one that will solve my problem! I am going to try quartz too- here's a place in Arizona I found http://www.advaluetech.com/fused-quartz-crucibles.html#Fused-Quartz-High-Form-Crucible

E-thor wrote:

Thanks Delphinny- I think the refractory one is the one that will solve my problem! I am going to try quartz too- here's a place in Arizona I found http://www.advaluetech.com/fused-quartz-crucibles.html#Fused-Quartz-High-Form-Crucible

no problem, make sure you use boric acid and not just plain old borax to season your crucible or it will leak. boric acid should give your crucible a nice "glaze" so it shouldn't leak. Anytime, Good Luck!!

E-thor wrote:

Thanks Delphinny- I think the refractory one is the one that will solve my problem! I am going to try quartz too- here's a place in Arizona I found http://www.advaluetech.com/fused-quartz-crucibles.html#Fused-Quartz-High-Form-Crucible

Thanks for the link to the Fuzed Quartz Crucibles! I have one of these in my shed somewhere but I think I've lost it now, their great ones if you can get them cheaply, problem is getting a fitting lid, best to buy a quartz round bottom flask and use a rubber stopper if you ever want to use it for distilling imo. what are you working on?

Im working on a dry path I've had some success with but have always had trouble sealing the crucibles i use. Learned a lot along the way.

E-thor wrote:

Im working on a dry path I've had some success with but have always had trouble sealing the crucibles i use. Learned a lot along the way.

Cool would love to hear more about it