I have found instant glue to be good enough.
It gives a very thin, no air, connection from the flat face to the tab sink.
As an experiment I ground down a To92 to nearer the shape of an Eline transistor.
I continued grinding the flat face by taking about 1mm off before the emitter wire became visible.
On the curved back face I ground off about 2.5mm before the collector and base became visible.
If one wanted to experiment with high power through a ground down To92 with two (back and front) sinks glued on, I suspect one could go as far as 600mW continuous with some (unknown) measure of reliability.
It gives a very thin, no air, connection from the flat face to the tab sink.
As an experiment I ground down a To92 to nearer the shape of an Eline transistor.
I continued grinding the flat face by taking about 1mm off before the emitter wire became visible.
On the curved back face I ground off about 2.5mm before the collector and base became visible.
If one wanted to experiment with high power through a ground down To92 with two (back and front) sinks glued on, I suspect one could go as far as 600mW continuous with some (unknown) measure of reliability.
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