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I am assuming the bonding agent adds nothing to the stress on the tube (after all it is pliable), so applying the banding with it on or off would make no difference, BUT if anything goes wrong while applying the banding I would prefer it to have the bonded face plate to hopefully contain some of the carnage.
Maybe when ETF gets the CRT rebuilding going, Scotty (who I hope will stop by to help with the learning part) can advise. I know VDC rebuilds had a simple band with a crimp on clamp and no bonding. Some of the factory new CRTs had a much more elaborate affair (steel form fitting frame around the edge of the CRT with the banding out side of that) as part of I presume implosion protection.
I would prefer to have that molded steel part since it seems like it would make band slippage a non issue. With out that it seems like you would need to make sure the band slips some as the tension is applied to allow for a uniform compression force around the perimeter of the tube.
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