What is the composition of freewheel gear cogs and can they be welded together without significant loss in strength?
I want weld only the inner ring of one cog (ground down enough to use as a spacer between gears) to an intact cog. This is to try for extra gear on the middle step of a freewheel body?
I have the Shimano MF-7400 Freewheel Body in mind. Obviously all spacers on this freewheel will be ground down to a 9 speed gap. (4.34mm)