Interesting observation

[coiledwire]

I was admiring some of my favorite small sebs today and I saw this; the curvature of the back handle of a regular seb is exactly inverse compared to classic/21 seb. Picture below.

I'm not knowledgeable on the history of the sebenza in the slightest compared to the long standing members here. But the fictional story my mind creates is that Mr Reeve accidentally inverted this curvature in the cnc program when prototyping the classic/21. This concave profile actually felt better in hand and was kept in the final design.

Its matched too perfect to be independently designed. Does anyone know the true story how this came about?

 

[bhyde]

That isn't an accident..The arc was created and observed long before the CNC program was created. In CAD, it's pretty obvious.

Just an FYI- Industrial designers love very large arcs..Some of them are so large, they represent something that appears to be a flat surface, but reflects light differently.
Not sure there are any industrial designers at CRK....I suspect the curvature is more of the insight of the long career of Mr. Reeve as a toolmaker, machinist, designer.

 

[coiledwire]

I agree, it's probably not an accident. I still find it interesting that the radius of the arc is the same between these knives, just inverted.

 

[kidcongo]

I was admiring some of my favorite small sebs today and I saw this; the curvature of the back handle of a regular seb is exactly inverse compared to classic/21 seb. Picture below.

I'm not knowledgeable on the history of the sebenza in the slightest compared to the long standing members here. But the fictional story my mind creates is that Mr Reeve accidentally inverted this curvature in the cnc program when prototyping the classic/21. This concave profile actually felt better in hand and was kept in the final design.

Its matched too perfect to be independently designed. Does anyone know the true story how this came about?

It was so when the were producing both Regulars and Classics at the same time, they could cut two slabs out of a sheet without wasting any TI. At first I thought this idea was just funny, but when you start thinking about it ...........

 

[Haze]

I think it's probably down to designers generally liking to play with the same radiuses, curves, angles etc. I spent a few years at Uni doing the very same thing. You see it in everything from street plans to buildings to cars to pens and everything inbetween including knives. People have thrown themsleves off bridges or turned into conspiracy nuts thinking about this sort of stuff though so be carefull.