Making a 16mm cone key for tightening the cones of the rear wheel of my #Brompton.
Instead of buying a default cone key from the bike shop I rather make it myself from a standard wrench. Why? Because bike tools are made from poor quality materials and expensive.
The process is quiet simple. Instead of filing the wrench (which is made from a chrome-vanadium alloy and then rather hard) I decided to do two cuts. I'll show you the final result.
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Here it is.
Of course the result would improve just by filing those edges and then polishing to mirror... That will happen some other day.
