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 Dental Alginate for casting molds?
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TC
Engine Wiper

Posted - 09/13/2018 :  9:40:29 PM  Show Profile  Reply with Quote
If you’ve ever had a dental crown done or some other work that required an impression and casting be made of your teeth, you’ve perhaps experienced a dentist or assistant using a substance called “dental alginate” to make that mold for the casting/impression of your teeth.

So I’m curious, has anyone used this material to make model castings, and if so, what were your results? I just came into a decent sized can of the powdered mixture, which can be mixed up into smaller or larger amounts as needed. I’d like to hear what experiences, tips or tricks might be known about how to use the stuff for modeling purposes...

Country: USA | Posts: 192

k9wrangler
Engineer



Posted - 09/13/2018 :  11:04:31 PM  Show Profile  Reply with Quote
When I was trained as an evidence technician aka CSI Tech we used a flexible dental product was used for making impressions to make tool mark impressions at burglary scenes. It was a two part product that firmed into a flexible ‘negative’ image. We’d then use plaster of Paris/hydrocal type product to make an image of a toolmark.

The product we used was in a tube if I recall, quite large, and a brown color. The second part was mixed to start the reaction. It had a mild odor but one that stuck in your nose for some time. Further looking I found it Coe-Flex. T’ain’t cheap.

I looked for the dental alginate online. It does appear to be used in a similar manner but different in constitution than the product i described. That training was circa 1980.


Karl Scribner
HMFWBIC
Kentucky Southern Railway
and associated lines
Midwest Lower Michigan

Edited by - k9wrangler on 09/13/2018 11:13:26 PM

Country: USA | Posts: 9485 Go to Top of Page

TC
Engine Wiper

Posted - 09/13/2018 :  11:11:04 PM  Show Profile  Reply with Quote
Interesting. The canister I have here is Jeltrate Plus- Dustless, and is marked “fast set” on the canister. Made by Dentsuply International.

I suppose the only way I’ll find out how it works for sure is to get out the Legos, build a casting box, and mix a batch of this stuff up...



Edited by - TC on 09/13/2018 11:12:16 PM

Country: USA | Posts: 192 Go to Top of Page

k9wrangler
Engineer



Posted - 09/13/2018 :  11:16:09 PM  Show Profile  Reply with Quote
Let us know. I see dental alginate for less than the Coe-flex.

Interesting stuff document and photograph your results.


Karl Scribner
HMFWBIC
Kentucky Southern Railway
and associated lines
Midwest Lower Michigan

Country: USA | Posts: 9485 Go to Top of Page

railmus
Fireman



Posted - 09/14/2018 :  10:57:08 AM  Show Profile  Visit railmus's Homepage  Reply with Quote
If I am not mistaken, the mold deteriorates quite quickly so you may not be able to make many castings.


Country: Canada | Posts: 1955 Go to Top of Page

k9wrangler
Engineer



Posted - 09/14/2018 :  11:01:52 AM  Show Profile  Reply with Quote
quote:
Originally posted by railmus

If I am not mistaken, the mold deteriorates quite quickly so you may not be able to make many castings.

Logical in that it is basically designed for a one time use.



Karl Scribner
HMFWBIC
Kentucky Southern Railway
and associated lines
Midwest Lower Michigan

Country: USA | Posts: 9485 Go to Top of Page
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