You should have to receive instruction and be licensed before being able to buy these tools :rofl2:
I think that these two blades where damaged on a buffer as the scratches bridge different areas of the blade I don't think a dremel wheel would.
Frosted tang and edge:
Attachment 198895
You can see this one was attacked from to different angles:
Attachment 198896
Attachment 198897
UGH:
Attachment 198898