[Alex]

I am producing this sink (picture 1 and 2) but with water clear polyester only.
The product took a lot of time to cure (6 – 7 hours), slightly elastic and highly fragile (i want it to be solid and tough).
It seems that the molecular bond is very weak. How can i fix this?
Images here: https://imgur.com/a/Cveadsr

[Katherine Swift]

It is the nature of polyester resins to be brittle. Have you considered a polyurethane resin instead?

[Author]

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