Failed Arms for My First Spot Welder Build.

Epic Fail. having seen several DIY welders, I though I'd make my own. I originally made the arms out of a lexan plastic, the thought being that the lexan would stand up to electrical current and not conduct electricity. Unfortunately for me the last night and it had a lower melting point than I originally thought. the other piece that I had used is not picture to hear because it cause A catastrophic meltdown