I was just mulling over my favourite knives for various applications, but this extends to any edged tools really, and a lot of my go-to blades came with one or more flaws, such as an uncomfortable handle, a blunt edge or a very wide angle edge which warranted some modification. Consequently I can hardly recommend them in their "out of the box" condition but after a bit of tweaking they are great. My question is: where do you draw the line? What is an acceptable bit of fettling and at what point does it become ridiculous? Is price a factor? Obviously I'm talking about new tools, not restoration projects and answers will be subjective.