Sparkplug ground electrode question

[Ghoste]

A guy at a buddy's shop this morning was telling me that he always uses a small file to take the sharp edges off of the ground electrode on his plugs and that it helps to improve plug performance.  I've never heard of this one before, any truth to it?

[Cooter]

Only thing I can think of would be hot spots...Again, part of "Blueprinting"...The less hot spots you have in the combustion chamber, the better...

[Ghoste]

His reasoning was that rounded edges made for a stronger spark.  It doesn`t make much sense to me but I`m no engineer for sure.

[oldschool]

thats the opposite of what you want.it is alot easier for the spark to jump a sharp edge.when a sparkplug wears out,it's the electrode that wears round,thus making it harder for the spark to jump,ie less efficient.

[Ghoste]

That is what I have always been led to believe but as I said, no engineer so I thought I would check it out.  Thanks oldschool.