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I realise this is an elderly thread but it seems the most relevant to my question: Could someone who is in possession of a Clico sharpening reamer for English pattern chisels kindly measure what the angle is?

I acquired several Japanese pattern chisels and augers with my elderly Sedgwick and they are easy to keep in good condition. A pair of diamond sharpening cones from Axminster are a perfect fit for the internal bevel on the chisels. I also have one 5/8" English pattern chisel. It's not worth trying to buy a Clico sharpening set even if I could find one (may as well just buy a new Japanese pattern 5/8") but I thought I would have a go at modifying a cheap conical aluminium oxide wheel to the correct angle, which isn't obvious from inspection of the somewhat abused chisel. The photo sent by Robbo3 earlier in the thread gives an idea, but a measurement taken from the actual reamer would be ideal if someone could oblige?

N.B. I don't know for sure that the chisel is a Clico - the first letter is C but the rest have succumbed to patina and polish - but Clico is the only sharpening tool I've heard of so hoping they are all similar.

Thanks in advance.