In article ,
Woody wrote:
The usual method to mount a TO92 plastic transistor is to drill a suitably
sized hole in the heatsink, push the transistor into the hole so that it is
in bodily contact with the metal, and plug the rest of the hole with
Araldite.

Work OK on the Lindsey-Hood amp of the 1970's

I used ally 'P' clips and glued them into those. Still working and
sounding good. ;-)

--
*The most wasted day of all is one in which we have not laughed.*

Dave Plowman London SW 12
RIP Acorn