Quote:
Originally Posted by drh4683
scotty told me that he always heats the tube in the oven to remove the lens while its still under vacuum. He claimed thats the only way to do it. I've heard from others that the lens gets removed once the entire tube is exposed to atmospheric pressure, but apparently thats a myth in the tube rebuilding world.
|
That's what I always heard too - that the lens just comes off as a result of the heating process when the tube has already been opened up. I guess if the safety glass can be removed with a heat gun while the tube is under vacuum then an oven might be a better choice. Plus the entire tube remains at the same temperature if heated slowly enough avoiding the differential expansion that seems to be a problem in these cases.
-Jim