If it were me, I'd probably anneal empty, then fill and seal heating as small of an area as possible... and check with polariscope.
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Chris Scala
Fortune Cookie say, "When things go wrong, don't go with them!"
Current Glass-Melting Apparatus:
GTT Lynx powered by 2 5 LPM Oxycons and
a sexy Barracuda running pure tanked Oxy
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