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  • Craftythistle

Cracking


I work a lot with resin mostly combining with wood. Now resin comes in 2 parts, the resin and a hardener which need to be mixed carefully in the correct proportions. There is usually a limit on how much resin can be mixed and poured, well the limitation is usually the depth of the pour. As the resin cures and starts to harden it performs an exothermic reaction. Which means it heats up! If too much is poured too deeply the resin can overheat. Actually it can get too hot which in turn accelerates the reaction which gets hotter and hotter. The picture above is of a block of resin lit from below. Embedded in the resin is a Banksia nut, which hails from Australia. In this instance I deliberately poured too much resin to get this very result. Air was expelled from the nut material and was 'caught' by the resin giving an interesting effect with air bubbles catching the light.

Ah, but why "Cracking"? Well another effect is that cracking occurs inside the resin with sometimes clam shaped cracks. Usually these do not have any impact on the structure of the object, and again add something extra to the aesthetics. Well I think so.

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