Choices in rectifier tubes for VTA?

You have put tubes through a dishwasher???? I can't imagine this is a very good idea....

Admittedly, I thought that was better than trying to wipe the years of dust off and risk removing the markings on the glass. A dishwasher was new to me at the time, so I didn't see a problem with using it. It realy did a great job, just that I ended up with generic looking tubes in the end anyway. And octal tubes are probably not a good idea to use this method unless you have lots of time to spare to adequately let the base dry.

For what it's worth, you can wipe the lettering off the new (New Sensor) genalex KT66 / KT88 tubes as well - after a couple of hundred or so hours of running... Seems the ink/paint graphics degrade because of prolonged exposure to heat.


-- 'Jan