Quote:
Originally Posted by Ralph S
...Otherwise the whole reattachment process seems pointless given that the notion of "safety glass" has been defeated by leaving out the glue that makes safety glass work.
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The safety glass still provides a first line of impact resistance, and definitely protects against scratches of the tube itself, which would weaken it. How much strength is added by transferring force through the filler to the tube itself is not clear, but I think it is preferable to have the safety glass with an air gap compared to no safety glass at all.
It does seem likely that the greatest amount of impact resistance is from the tube itself, which is under compression from atmospheric pressure. I believe implosion requires that a sufficient uneven force or tension be developed in some part of the tube.