Re: Viewports gobbed on with silicon

["Paul Suds" <paul_suds@hotmail.com>]

OK guys, anyone got a club so we can finish off that horse, Ha. I agree, 
that under high pressure (500 psi), cold forming of polycarbonate may be a 
problem, but not at the pressures I'm looking at (50psi), especially if it's 
1/2 to 3/4 inch thick. Creep is very low. I'm also willing to trade off 
scratch resistance for impact strength. We're only comparing Rockwell 70 vs 
100 for Poly vs Acrylic, respectively. I've designed products for processing 
with injection molding machine using both materials and PETG, but I don't 
have the experience that some of you have with view ports. Nothing beats 
experience. I might have to revisit Acrylic. I think I'm going to keep this 
decision open until latter, which is good. It's great to get this type of 
feedback. Thanks for the help.


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