Working acrylic instead of copper: the distance from free edge to the hole can not be equal or similar. I am not a designer, my profession is a doctor: but by logic I have deduced that there must be good wall thickness around the hole .... and in the case of tifffon: not only supports the weight of water, the weight of the pump, the vibration produced and also the strength of the screw:
too many variables for a very thin wall.
by looking at the next picture, there plenty of room for a thicker wall in the place of damage.
http://img300.imageshack.us/img300/2239/primo1.jpg
I have reviewed several forums and the 99% of damage occurs in the same place, in this forum i found a report from
kaytaro on 07/26/2009:
http://www.xtremesystems.org/forums/...&postcount=476
deffinetly the cooling liquid is not the problem,
the design is! :mad: and primochill as responsable has not made any announcements.:shrug:
.