Quote Originally Posted by serialk11r
Have you ever actually handled a pure copper bar before? It is far from soft. Its soft compared to other metals, but is not what I would call soft. The bases of those blocks there are rigid enough alright.
Quote Originally Posted by WeStSiDePLaYa
have you ever thought of how soft copper is, and the great amounts of pressure the mounting mechanisms put on the block?
Relatively soft, compared to other metals. WSP isn't talking about soft as in ''teddybear soft'', obviously.

Even though a copper base isn't exactly ''soft'', it's going to bend (slightly) under the stress of the mounting mechanism.