I had a customer for a BIG razor. We started talking at a target range between 10/8 and 11/8. 11/8 became '12/8+' which became 14/8.
I made different pieces of damascus for the different parts of the razor. The overal number of layers in the cross section is about 500 to 1000. It's the biggest 'real' razor I've ever seen. The thickness was kept manageable by having the hollows more like a 10/8, with 4/8 for the spikes on top of the spine. So all in all it's relatively thin and light while still respecting the 4/1 width vs thickness rate.
This was the forged blank. There is a normal sized 15/16 blade for reference.
Attachment 320610
It's huge, but it handles surprisingly well.
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