[Connor Donkin]

Using a silicone bread mold as a mold, the mold are 11″ long x 2.5″ wide and 1.75″ deep. This requires a lot of material to use so everytime I’m doing it its goung to waste as when the resin is removed from the mold it appears to have Mark’s all over the top. The marks look like wet Mark’s or veins in the resin. The mold is perfectly smooth so was wondering what could be going wrong? Thanks

[Katherine Swift]

Hi Connor, it sounds like you may not be mixing the resin thoroughly enough. What kind/brand are you using?

[Connor Donkin]

Thanks for the reply, it is a water clear casting resin, just a basic set off Ebay. I did use a metal mold too and they came out fine but it is smaller than the silicone one. Thanks

[Connor Donkin]

HI, I forgot to mention that its not set in the resin, it’s on top and around the sides. On the top surfaces it’s got the marks like rough patches that look like water Marks or veins on top

[Katherine Swift]

Hi Connor,

Is your casting resin a polyester resin? If so, it sounds like it’s getting too hot. Try using less hardener.

[Connor Donkin]

Yes it’s a polyester resin, I’ve been using 2% but I will try 1% instead, thanks

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