It wasn't this one, it was something about the direction you shave in - slightly angled rather than straight down. I seem to recall it was in response to a comment on the Gillette slide.I posted a snippet from a booklet about the New Improved which said that both SIDES of the razor should be used - they meant both edges, not necessarily to flip the blade.
Here's some advice for butterfly razors:
"Slightly open the razor, rinse under the hot tap and shake off surplus moisture" ... which in no way could the blade be removed, handled, fiddled with of flipped.
I'd say your argument is somewhat flawed - a knife usually goes straight against the material being cut, or pretty close to that. Most razor heads will hold a blade in a way that prevents it from cutting that way.When carving meat do you walk around the other side of the table to cut the leeward side?Blades are double & triple beveled!!! They wear the same on either side shaving just as a knife does cutting cheese!!
That's the one!Yeah, as I said ... it mentioned to use both sides (point 30):
... meaning both edges.
"Some users find it an advantage to turn the blade over after each shave." I like the terminology. Coming from IMT Support background, we all know about users and their great ideas. "Some users" ... tut!
This pamphlet is for the New Improved.
It has never occured to me to only use one side of a DE razor during a shave thus me not having to turn the blade after each shave, I just spin the razor round at every rinse giving the blade an equal amount of use on both sides, that may have been a better suggestion in point 30! How odd!Yeah, as I said ... it mentioned to use both sides (point 30):
... meaning both edges.
"Some users find it an advantage to turn the blade over after each shave." I like the terminology. Coming from IMT Support background, we all know about users and their great ideas. "Some users" ... tut!
This pamphlet is for the New Improved.
I'd say your argument is somewhat flawed - a knife usually goes straight against the material being cut, or pretty close to that. Most razor heads will hold a blade in a way that prevents it from cutting that way...
To me, the ONLY argument for flipping is that the top surface of the blade can become clogged with detrius, even after a good rinse.
I do sometimes take out such a clogged blade and hold it under a tap whilst pinch sliding (carefully) along blade with finger and thumb to clean both surfaces. Generally tho, i find it works best to loosen the cap just a little, and then rinse the now loose blade under a hot tap (remembering, of course, to re-tighten said cap before commencing shaving
Other than that, i dont find much credibility in arguments that flipping a blade after a shave makes for a better next shave.
That's pretty much what I wrote in what you quoted, I just used "pretty close to that", rather than "cone of dispersion".No one holds, or can cut for that matter, at a perfect 90° angle. Just as with shaving there will always be a "cone of dispersion" due to user error/variation. Remember, a DE razor blade is not held perfectly flush against the skin as it can't.
I'm not sure that the description of likely angles actually explains how the leading edge is affected when more force is applied to one side than the other in a significant and regular manner.Because of the razor being held at a circa 20° - 30° angle plus the shaver's variations (we're not robots) in the aforementioned "cone of dispersion" plus the double/triple beveling of the DE blade between usually 13° to 19°, one can see there is a lot of geometry at work here. But, as I just explained, the blade leading edge will be affected by hair equally on both sides. Perhaps you thought DE blades have a regular edge(?).
...I'm not sure that the description of likely angles actually explains how the leading edge is affected when more force is applied to one side than the other in a significant and regular manner...
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