large but thin transparent resin cast in open mould


large but thin transparent resin cast in open mould
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palace
palace
palace
posted 11 Years Ago HOT
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Hi,



1. 

I need to make an 110 x 40 x 0,4 cm water clear resin cast. Would you recommend polyester resin for this ? The mould I will use is made of rtv silicone.


2. 

I will cast in an open mould. 

Any suggestions on how I can keep the surface of my cast tack free ? 

I read that cellophane film can be used to cover the surface of the cast and protect it from air. If this is correct: Do I need to place the cellophane film DIRECTLY on the surface after I have poured the resin ? Or will it do if I place the cellophane 1 cm over the surface ? (My mould is in a wooden frame, and it would be a lot easier to place (tape) the cellophane ON the frame, rather than IN the frame.) 

If I need to place the cellophane film directly on the surface: When do I do that? Immediately or when the resin has started to cure?

I also read about MW wax. If that would be a better idea for protecting the surface: how do I apply the wax ? Do I mix it with the resin, or do i pour it over the resin as a final layer ?

I need a clear and transparent cast without any cloudiness or discolouration.


Thank you
Edited 11 Years Ago by palace
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palace
palace
palace
posted 11 Years Ago HOT
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Posts: 6, Visits: 41

Well, one side of my cast will be against the silicone mould, which has a lot of complex details. The other side, the one that is in the open, will be the back of the cast.


brainfart (17/08/2014)
> 

> I need to make an 110 x 40 x 0,4 cm water clear resin cast.

Just buy a sheet of clear acrylic/plexiglas at the next hardware store. Much cheaper, easier, faster.

Edited 11 Years Ago by palace
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large but thin transparent resin cast in open mould
palace - 11 Years Ago
     Interesting :) I just startet working on a simular projekt. working with a water-clear...
eflin1 - 11 Years Ago
     > I need a clear and transparent cast without anycloudiness ordiscolouration. Good luck,...
brainfart - 11 Years Ago
             Well, one side of my cast will be against the silicone mould, which has a lot of complex details....
palace - 11 Years Ago
     Oh ok, I thought you wanted to produce a clear, transparent and glass-like sheet which doesn't...
brainfart - 11 Years Ago
     Use Solution MW Wax Gelcoat Additive to stop the back going tacky. It can be cleaned...
Warren (Staff) - 11 Years Ago
             Thank you Warren, I have ordered the wax. I couldn't find any technical data sheet regarding...
palace - 11 Years Ago
     You just mix it into the resin... it will "float" to the top of the gelcoat, forming a barrier...
Dravis - 11 Years Ago

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