[jcassity]

 please elaborate on your heat sink on the output and rectifier tubes. That is interesting. That might be something useful for a nice tube stereo receiver, where the output tubes run HOT HOT HOT.

here is whats going on with the heat sync i made up.  and the photo i posted on the previous page of this thread.
I accounted for expansion and contraction of the metal to glass contact.

I'm thinking glass is  harder than steel so therefore the steel will always be "ahead" of the glass at the molecular level ,, as in i tried to account for this setup to not break the tube glass.  Time will tell.

what i really want to do is bond the top of the aluminum plate to the "TOP side" of the power transformer this way heat walks to a large chassis part but........ at this time, the power transformer is staying so cool and the simple air cooled setup vented aluminum chunk i have is keeping temps low enough. ,,, much lower than before. nothing is hitting 300 degrees anymore so from my redneck view, sounds like progress to me.

i wonder if it would be better if the bands were copper instead of steel. ? thoughts on this transition from heat produced and traded off to a metal object that then has another metal object that sucks it away and out into the air??????????