Posted by Sherman in Idaho [24.32.202.166] on Thursday, April 18, 2013 at 19:19:14 :
In Reply to: sleeved or not posted by clueless [201.202.22.114] on Thursday, April 18, 2013 at 15:37:42 :
Sounds like folklore to me. Maybe in theory by a ten-thousandth or something but if it shrunk the metal significantly it would throw all kinds of things off. It might be an effective way to crack a marginal block, though.