Quote:
Originally Posted by andy
Be careful not to use too much pressure because the safety glass will crack without warning. If you use a heat gun, play it safe any buy a temperature controlled one. That way you can dial in the minimum heat needed to separate the safety glass rather than hitting it with 1000 degree air.
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The reason we're avoiding heat guns is to eliminate the thermal stress you get from heating the tube face without heating the rest of it. Too much of that and it goes bang. There've been some stories here recently about tubes going off with minimal stress, hence the move to using sunlight/heat.
The key is really an even temperature over the WHOLE tube. I suspect if you have a large enough convection oven that can do, say, around 40-50°C, you'd be well on your way.