VAN with a PLAN wrote:Interesting that a number of you mention 8mm holes - is there any science behind the size of the hole? I've always gone for 5 or 6mm primarily because I have a cheap joggler with a hole punch, something like this:
http://www.holden.co.uk/displayproduct. ... de=095.484
This forms a nice clean 5mm hole - should I be opening these up to 8mm?
I have the same joggler and I found that the hole was too small to get good penetration on the panel beneath. The wire arcs on the sides of the hole first, rather than on the metal underneath. I've had better luck with 8mm holes.