Yeah they don’t want a blade to last for too long. Lost profits. Like the short lived Personna 74s.
Considering Gillette's profit model is based upon the selling of the blades, if anything they researched how to make a blade deteriorate quickly so they won't last as long.
Well, I've been an engineer at GM for the last thirty years, and can assure you that I've never, ever heard anything like that.I remember many years ago talking with an engineer in GM. He was working on rear wheel axel designs. GM wanted an axel that had an average lifespan of 2 to 3 years. At that time, GM provide a 12-month/20,000 mile warranty.
It's all part of an engineer's job.
This was in Australia about 40 years ago when GM use to make vehicles there.Well, I've been an engineer at GM for the last thirty years, and can assure you that I've never, ever heard anything like that.
This was in Australia about 40 years ago when GM use to make vehicles there.
That comparison is often misquoted; in fact hair and copper wire of similar diameter have equivalent tensile strength. That does nor correlated to equally hard to cut and in fact hair is much easier to cut than copper wire.Hair is similar in strength to copper wire of the same diameter.
Unfirtunately, getting photos at a high enough magnification to allow a meaningful assessment of edge condition isn't as easy as it sounds - and that still wouldn't give much insight into wear mechanisms.Has there been a member that used there magnification tools to look at a DE blade edge? I would think that this would be something of interest for someone with the right equipment. If they looked at a new blade the next logical step would be look at an old one. Then maybe all of the shaves in between. If they could take pictures and post them, that would be great.
Unfirtunately, getting photos at a high enough magnification to allow a meaningful assessment of edge condition isn't as easy as it sounds - and that still wouldn't give much insight into wear mechanisms.