Perler Tree Fail!

I thought i might try melting perler beads in a cookie cutter, more just to see if it would work than for any specific purpose. Well it worked alright, those little beads melted and fused themselves (apparently permanently!) to my cookie cutter and the tin foil below it! No i didnt use any mould release or similar on the cutter, i see now that that may have been an error, but i figured the beads would only bond to themselves not the cutter! Oh well, you live and learn...