AMuzi wrote:

Can you overtight a QR for example with
a soft mallet? I mean can this damage or be
a detriment to security? Obviously if you
can't get it open again, that's another
matter...

Oil cam, press closed with palm.

Adjust such that the lever leaves an imprint
on your palm for a few seconds.
Not a hematoma, just an imprint. That is
a tighter setup than a wrench on most
nutted axles.

OK.

Use your mallet for making art with a wood
chisel:
http://www.chosensites.com/mallet-chisel-480.jpg

Ha ha, wonderful

--
underground experts united
http://user.it.uu.se/~embe8573