Get Anthony to do it. If you had an old tank sitting around you could practise, but if he's willing to do it, then I'd take him up on it. He's also knowledgeable enough that he should he able to spot if it's tempered.
You can't use diamond bits on any plastics - they will heat up and melt the plastic which then sticks on the bit.
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~ Mindy
SPS fanatic.
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