Where would you say the Shovel Head ranks on it's aggressiveness. I looking at one to buy. Less than the MMOC, more than a GEM 1912?
Does the Ever Ready 1924 Shovel Head benefit from shimming the blade?
All blades, vintage and modern, are the same thickness. The difference is in the thickness of the spine, which was much thicker on vintage blades. Since the blade is supported at the spine in most razors, changing the spine thickness changes blade angle. I recently got a digital caliper, so I can dazzle with numbers.
Modern Gem SS spine: .039
Gem Damaskeene spine: .063
Ever-Ready spine: .081 - (this is an Ever-Ready "Quality De Luxe" from about a century ago)
Thickness of the shim (half of a modern spine): .015
All numbers are thousandths of an inch (sorry, European guys).
So, if we subtract the difference between the vintage and modern spines, and divide by two (since we're only concerned with the side of the blade being supported) we get .012 for the Damaskeene blade and .021 for the ER blade. So adding a shim of .015 at least gets us in the ballpark.
Of course the vintage blades also used different steel and a different bevel on the edge, so it is still only an approximation.
--Bob
The shovel Head or 1924 is slightly more aggressive than the OCMM & way more aggressive than a GEM 1912...They can feel milder than they actually are because they are quite smooth and a lot more manoeuvrable...They are a lot easier to use than an OCMM and far more manoeuvrable than a 1912...Nice shavers Sir....
Billy