Doug,
In the past I have used Krylon Clear Acrylic Coating (spray can) for SL
models that need to be tested in water. You will sacrifice (somewhat) on
dimensions as two or three coats should be applied. However, if your
geometry has line of sight problems and you cannot coat the entire surface,
immersion in Thompsons or any other water sealer of this type would prove
better.
Jason Dickman
Hasbro Toy Group
dickman@cinti.net
At 07:43 AM 1/23/97 -0500, you wrote:
>Hello all:
>
>I am interested in other users experiences with immersing SLA prototypes
>made from Ciba Geigy SL5170 in water. The goal is to coat the SLA model
>with some clear substance in order to do some water flow testing, while
>counter-acting the hygroscopic nature of the cured resin. I realize that
>this is an unusual application, but for the geometry involved, SLA is
>really the only solution.
>
>I have spoken with some users who have coated the SLA model with a
>water-proofing material (something like Thompson Water-Seal, which is a
>US product) prior to immersion - and this has worked OK. The problem is
>that the Thompson's product does not always dry completely, but remains
>somewhat tacky.
>
>If there is another product on the market which others have used
>successfully, I would appreciate a response. A supplier name and contact
>information would be appreciated. Thanks to all.
>
>Doug
>
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>| | |_ ____ \ | | Square D Company
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