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mate if i said everyone get a hand saw out or a electric jigsaw it makes this concept useless as the point im trying to make is that the burnt centre ring needs to snap into place "perfectly" wthout gaps, thus like the disc has never been cut.
precision just means find a means to make it pricision. i.e a disc holder with drill bit that always lands perfectly in centre ot disc to make perfect cut.
get it now. so close ya cupboard and use ya brain.
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