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Olivier Duhamel
Joined:
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25-Feb-2009
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Started On : 06-Aug-2010 at 11:53:27 PM, #Views : 6017
Topic Subject : Forton and hot air gun... |
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Hi Everyone.
I have been casting in Forton for quite a while now and absolutely love it (expect the price, very expensive where I live)
I have recently been experimenting with the following technique:
After painting a first thin layer all over the alginate, I gently apply some heat with a heat gun on low. The Forton almost instantly sets; I immediately paint a second thin layer and heat again and repeat until I have applied my entire batch.
Casting in Forton becomes incredibly quick...
...but there are some other advantages:
The air flow pushes out any fine air bubbles: Result: a perfect cast. No tiny pin holes.
The slurry does not have time to slide off the walls and puddle in the deeps. Result: a uniform thickness.
It makes reinforcing with fibre glass very easy.
I still let it cure fully before unmolding.
The resulting castings seem to be just as strong as if left to set normally. No problem of laminating layers either... what is the catch?
When I first experimented, I used the heat gun too hot, that made the alginate shrink and shrivel… ooops!
Has anyone been trying this too? Is there any potential detrimental effect? Do we know what the manufacturer has to say? I could not find any literature on the subject…
Any feedback much appreciated.
Olivier
www.bodyscape.net.nz
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