Paradigm 2020 Diamondback

Elvis Outlander I have a strong hunch I know who this might be lol. Hi, Chris! Thanks for the info on damping. To push this one small step further, I think that audible feedback actually consists of resonant frequencies. Resonance occurs when one object connected to another object vibrationally excites the object at one of it natural harmonics. You get feedback in the form of sound.

The way I figure, shaving produces vibration in the blade (the extent depending upon the degree of damping). It is this vibration which we hear and feel in our hand. It can be a guide to understanding when the razor is cutting, on the positive side. On the negative side, too much undamped resonance will be experienced as "chatter." Since Elvis Outlander brought this to my attention in email, it's something I am going to consciously design into my razors. Not using math, but simply as an enhanced awareness of when the blade feel seems about right. This was something I paid attention to anyway, but it's interesting to explore the theoretical underpinnings. 

I was into all this at another time in my life when I was designing speaker cabinets. Fortunately, I had software to help with these complex solutions.

I've followed the thread since the beginning and have read through all of the reviews. And I'm curious...would it be safe to say the 2020 Diamondback can shave as close as (or at least very close) to the Blackbird and do so with the smoothness (ie lack of blade-feel) of the Timeless 0.95?

HoosierShave see post #196 with regard to Timeless

I've followed the thread since the beginning and have read through all of the reviews.  And I'm curious...would it be safe to say the 2020 Diamondback can shave as close as (or at least very close) to the Blackbird and do so with the smoothness (ie lack of blade-feel) of the Timeless 0.95?

 yes, easily...at least for me.

I was into all this at another time in my life when I was designing speaker cabinets. Fortunately, I had software to help with these complex solutions.

I had no idea you designed speaker cabinets....that is another bottomless pit of subjective opinions.

I've followed the thread since the beginning and have read through all of the reviews. And I'm curious...would it be safe to say the 2020 Diamondback can shave as close as (or at least very close) to the Blackbird and do so with the smoothness (ie lack of blade-feel) of the Timeless 0.95?

Shaves closer than blackbird for me. I Cannot compare smoothness to timeless however. It is very smooth though.

Really interesting about the speaker cabinets Paradigm Shaveware .  I really don't have a lot experience with this type of thing, and what experience I do have is purely non-mechanical in nature.  I don't think you would be able to do something like this using the Math with razors.  If what I am suggesting is something real, the main source of damping would be the skin (and lather).  The pressure one utilizes would impact how effective their skin is at damping the blade.  I also think a more shallow angle would dampen the blade more (even though I favor the bar).

This line of thinking (as opposed to pure geometry) kind of makes me wonder what shavers do to dial in the tuning by adjusting their technique to the razor. . . . like adjusting pressure or angle.  In the car analogy, do the people I know who love their cars with weak shocks prefer them because they drive slow. . . . or do they drive slow because they have cars with weak shocks?

I am not sure if a critically damped or over damped system will resonate.  I do think that if the system is critically damped or overdamped, most feedback will be from the stubble noise (and not oscillation/resonance).  I like when the two added together (stubble noise and razor singing) are a minimum.  I think this would be somewhere between critical damping (as much flex as you can have with no oscillation) and "quarter decay" (damped oscillation where successive peaks are 1 quarter the previous). . . when the blade is allowed to move a little with the noise of the stubble without resonating (or having resonance that is quickly damped if the blade is allowed to move just a little more).

In terms of review, I think the Diamondback is very smooth given its exposure, and being well tuned in terms of damping could be the explanation.

Really interesting about the speaker cabinets Paradigm Shaveware .  I really don't have a lot experience with this type of thing, and what experience I do have is purely non-mechanical in nature.  I don't think you would be able to do something like this using the Math with razors.  If what I am suggesting is something real, the main source of damping would be the skin (and lather).  The pressure one utilizes would impact how effective their skin is at damping the blade.  I also think a more shallow angle would dampen the blade more (even though I favor the bar).

This line of thinking (as opposed to pure geometry) kind of makes me wonder what shavers do to dial in the tuning by adjusting their technique to the razor. . . . like adjusting pressure or angle.  In the car analogy, do the people I know who love their cars with weak shocks prefer them because they drive slow. . . . or do they drive slow because they have cars with weak shocks?

Only an underdampted system will resonate.  I do think that if the system is critically damped or overdamped, it by nature will not resonate, and any feedback will be from the stubble noise (and not oscillation/resonance).  I like when the two added together (stubble noise and razor singing) are a minimum.  I think this would be somewhere between critical damping (as much flex as you can have with no oscillation) and "quarter decay" (damped oscillation where successive peaks are 1 quarter the previous). . . when the blade is allowed to move a little with the noise of the stubble without resonating (or having resonance that is quickly damped if the blade is allowed to move just a little more).

My Tatara Nodachi has almost no blade vibration. I like to how he explained the subject simply. I understand it is more related to how to constrain the blade.
https://tatararazors.com/masamune-specifications

Really interesting about the speaker cabinets Paradigm Shaveware .  I really don't have a lot experience with this type of thing, and what experience I do have is purely non-mechanical in nature.  I don't think you would be able to do something like this using the Math with razors.  If what I am suggesting is something real, the main source of damping would be the skin (and lather).  The pressure one utilizes would impact how effective their skin is at damping the blade.  I also think a more shallow angle would dampen the blade more (even though I favor the bar).

This line of thinking (as opposed to pure geometry) kind of makes me wonder what shavers do to dial in the tuning by adjusting their technique to the razor. . . . like adjusting pressure or angle.  In the car analogy, do the people I know who love their cars with weak shocks prefer them because they drive slow. . . . or do they drive slow because they have cars with weak shocks?

Only an underdampted system will resonate.  I do think that if the system is critically damped or overdamped, it by nature will not resonate, and any feedback will be from the stubble noise (and not oscillation/resonance).  I like when the two added together (stubble noise and razor singing) are a minimum.  I think this would be somewhere between critical damping (as much flex as you can have with no oscillation) and "quarter decay" (damped oscillation where successive peaks are 1 quarter the previous). . . when the blade is allowed to move a little with the noise of the stubble without resonating (or having resonance that is quickly damped if the blade is allowed to move just a little more).

My Tatara Nodachi has almost no blade vibration. I like to how he explained the subject simply. I understand it is more related to how to constrain the blade.
https://tatararazors.com/masamune-specifications

The way the handle screws into the base plate also adds to the rigidity. They confirmed this during their AMA session.

take pictures online

TLDR; this is the best DE razor on the market. Period.

Bold claim? I’d say so. Well considering the razor was as smooth as an EJ DE89 but was more efficient than the Nodachi or Karve “D” plate.... I’m confident I am correct.

The finish.... mirror on all parts... and all sides with the exception of under the top cap. I’m talking Wolfman level mirror finish. Absolutely beautiful.

The shave.....Y’all say this thing has a “phantom blade” and my god it does. The only thing you can feel; is the heavy yet balanced razor in your hand, and the SB gliding across your cheeks. There is zero blade feel. It’s as if it melted away 24hr + growth with zero effort. I achieved absolute BBS in 2 passes: Across and then against the grain. I also have sensitive skin and incurred ZERO irritation. After shaving with it; I’ll tell you that it’s wayyyyy undervalued. I’d easily pay $350, and am considering taking myself off the Wolfman wait list for a 1.45.

The competition: I’ve used the EJ89, RazorRock Lupo, Homelike START 1.18, Rockwell 6C, CG lvl 1, Tatara Masamune, Tatara Nodachi, RazoRock Gamechanger, Wolfman 1.15, KARVE “C” and “D”, and I’ll even throw in my favorite SE: the Vector. This razor beats em all....not to mention it is absolutely beautiful.