Welcome to the Yard Vivi <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

nice score for your first SYK. why so thick? my best guess is it's a SY thing, for toughness and strength.
for more info for the MP here's a link to the thread when it was first described to us;
http://www.scrapyardknives.com/ubbthread...part=1&vc=1

for the edge/grind possibly it's the best and fastest way they have found that is easiest to maintain
and cost effective.

you can read the pages and maybe get some more answers.
welcome again and many more!