"Jonathan" wrote in message
...
Trying to help a friend with a sprained neck mount a 14" tv on a bracket
in a 70's flat with internal concrete walls using a standard hammer drill
So, the tv isn't THAT heavy, but the concrete is just not giving! I
drilled a smaller pilot hole (took 5 minutes to go 1" with a 5mm bit) but
when it came to the 8mm bit, really nothing was happening. I gave up after
about 15 minutes and 3mm having gone slightly deaf!

Do I: Drive all the way to B&Q and see if there is some super drill bit
for ridiculously tough concrete (is there?) , OR, use a good splurge of
"no nails" to glue a square of wood into the wall, and then drill into
that?

I wouldn't rely on glue to hold a TV bracket.
As other posters have said an SDS drill will go through concrete with ease.
However an ordinary hammer drill shouldn't struggle that much.
Are you sure you are not drilling rebar?
If you are, stop before you do structural damage.
Move the hole a bit and try again.