Dental Stone

jeanheckle

Member
I was able to make my own frag plugs since I work in a dental office. Is dental stone okay to use in the tank, does anyone know?
Thanks
 

oceana

Active Member
i guess i'm not sure. isnt dental stone just used for making dental molds?
it seems it is nothing more then Hydrocal a fast setting stronger alternative to plaster. it does have gypsum as a main ingredient which is calcium sulphate dihydroxide.
from what i know none of the above should hurt the tank but i would think it would quickly break down in salt water.
 

jeanheckle

Member
Originally Posted by oceana
http:///forum/post/2752173
i guess i'm not sure. isnt dental stone just used for making dental molds?
it seems it is nothing more then Hydrocal a fast setting stronger alternative to plaster. it does have gypsum as a main ingredient which is calcium sulphate dihydroxide.
from what i know none of the above should hurt the tank but i would think it would quickly break down in salt water.
It's made of calcium sulfate and states no hazardous decomp properties although I don't know how that translates to salt water tank.
Thanks, Dori
 
Dori,
The dental stone & plaster we use isn't very good because it'll break down in water no matter how hard it is/gets. (I work in a lab)
You could try the yellow stone, but mix it extremely dry so it's at the hardest stage it can get. No, not the way you mix to pour a model, make it much MUCH dryer of a mix. You'll want to see it dang there hardening up as you start mixing. Make the plug and test the strength of it after a week. You might be able to simply snap it in 2 with your fingers.
I'll run a test myself as well using more exact mesurements of 2 brands of the yellow stone.
Red,blue,green,white dye-stone is definately a no-no. As well the plaster is just too weak to even try.
 
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