score the glass with a glass cutter, then they place a line of lighter fluid on the score line and light it, The quick burst of heat cracks the glass off.
Thats a very bad idea that will result in a cracked tank... Thermal breaking is a VERY tempermental thing that has a 90%+ failure rate and if it works it usualy results in a savagly rough "sharks tooth" edge. The only time you ever use heat/fire to cut glass is for laminated glass and its only to stretch the PBV so methal hydrate can penetrate the crack to disolve the PVB or melt it
But back on subject...Ive done it many times... But ive been working with glass for a long time so I know how to do it, but even tho I can 90% of the time I take it apart as glass over 4mm thick is far harder to get to run cleanly.
If your dead set on doing it a water fed diamond saw is your best bet, dont try the scribe way as its far harder and requires knowledge of good glass cutting
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09-13-2011, 03:53 AM
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