Thread: Angle of Attack

Do you ever get the feeling that we overanalyze this stuff?

Thanks for all the great info. I love SRP.

Josh

by "overanalyze" - what exactly do you mean? Can you give us some techniques you've found successful in overanalyzing?

Oops, hair is keratin not collagen. The two are similar though not identical. Keratin is even longer, contains sulphur, and are even more tangled

"The basic unit of hair is a long strand of protein chain which forms into an alpha helical secondary structure. Three of these alpha-helical lengths of protein wind around each other to form a structure called a protofibril. In turn, a microfibril is assembled from eleven protofibrils arranged in a way that involves nine protofibrils wound around two protofibrils. Hundreds of microfibrils are then packed together with a sort of protein glue to form a macrofibril. These macrofibrils are, in turn, packed within the body of a dead hair cell. A typical hair fiber is about ten hair cells in diameter."

http://dl.clackamas.cc.or.us/ch106-08/structur1.htm

In short, it seems even less likely that a razor blade will somehow thread it's way through the twisted tangle, finding the gaps between the molecules and sliding them apart.

Alright, you guys are sick. I tried to keep it simple with my guillotine and slicing analogy. But yoose guys. Geeze!

Anyways, I'm just glad to stir it up a little and get those brain cells working.

Just don't kill it too much for the newbies sake.

Scott

I'll also make it simple: I would not want a blade to be slicing anything on my face. If you attempt a slicing motion, you better be a big fan of scars and self-mutilation. Scything motion is a different story and can come in useful with a dull blade, but if your blade is truly shave-ready it's almost redundant.

Aren't you confusing the angle of attack (ie spine lift) with the angle of the blade cutting edge?

In a guillotine, the blade's edge-spine plane is actually perpendicular to the neck. In a shaving equivalent it would be like having the blade absolutely parallel to the face, which would leave stubble as long as the razor's spine is thick, assuming it would cut all of the hair in a reasonable number of passes.

I forgot to mention that the blade would be angled to the path of the pass.

Originally Posted by honedright

There is no lateral movement, no forward nor backward side to side plane of movement. The angle of the blade does all the work.

Scott

Wrong.
By inserting an angle, you create lateral movement. If you look at it from the razor's point of view: For every mm down, you go 0.x mm sideways.
Ergo there is lateral movement. You don't perceive it because it is hidden by the fact that you move in a straight line, but the edge itself goes partially sideways.

The Barbers Manuals posted in the help files talks about shaving with the toe leading.

http://http://straightrazorpalace.com/component/option,com_docman/task,cat_view/gid,19/Itemid,3/

Is that what you are refering to as "angle of attack"?

Dave