My point remains. 12 - 14 degrees inclusive. That is half of what you say straight razors are shipped at, and all 3 of mine were in that range, both now, and from the factory. I couldn't care less what is recommended for stropping, it works for me and I shave just fine with it. And have for the last 5 years. To assert that all cutting angles are ground at 15 dps is not true at all. There are many makers who come in both more and less than that. There is no magical angle that works for all cutting.
No, I did not type that razors "are shipped at" 15-dps, you are welcome to review, and no one here has asserted that all cutting angles are ground at 15 -dps, so i must assume that since your post is populated with made-up nonsense then nothing you type should be taken seriously. For the
third time, what i posted:
Even a straight razor, after stropping the edge, ends up ~15-dps.
No where did I type anything about a "magical angle". It is great that you have been grinding your blades and shaving with them for 5 years
You also clearly
have no idea what level of refinement you have achieved nor what the working angle is on your blades, how much burr you have, nor the level of damage induced after a swipe or two.
And that's OK if it is working for you. You keep doing you. But please don't make stuff up about what I've typed, leave me out of your fantasies.
I posted SEM images taken by ToddS of straight razors ground and stropped, I posted Gillette's own patent info on the ideal apex angle of a razor, I could post more such information and even what the various manufacturers recommend for their blades, but I somehow don't think more information would be useful to you. Gillette's patent describes
the last 40 microns of the edge, and ToddS' images reveal
that last 2-3 microns, that is not something any of us can see without sophisticated magnifying equipment. You don't have to
care about the reality so long as it works for you.
15-dps being recommended angle for everything from chainsaws to straight-razors (
Murdock of London actually suggests more) doesn't mean that you CAN'T grind a blade thinner for
your use. Heck, most utility razors
seem to be ground thinner though some companies take the edge to soft "burr removal" process that alters the geometry slightly in the final part of the apex. *shrug*
But if you mean that 15-dps DOES NOT "work" for everything from chainsaws to straight razors, THAT is utter nonsense. Edges wider than 20-dps can whittle hair and they work quite suitably for chainsaws as well.
Here is a video showing
DOVO's manufacturing process - if you skip to ~4:00, you'll observe the final honing prior to shipping. The worker, after grinding the edge at the spine-set angle,
lifts the spine slightly to apply a larger honing angle and makes several passes, then dries the blade, and finally strops the edge. This edge is probably 12 - 20 dps (in the tiny microbevel supporting the apex) prior to shipping, and is keen enough to whittle hair. So perhaps companies DO ship their razors with such angles afterall
You are having a really hard time with this, aren't you? That makes how many made-up assertions that you claim were mine? And then you think that I am failing to comprehend? SEM images are not "seem" and "probably", nor are the manufacturer recommendations, nor is the video showing that the manufacturer is honing and stropping the final apex of their product to an angle much larger than you are pretending.