Originally Posted by
robatsu
I've got a Sugino Mighty Competition crank I'd like to use as a triple. ..triple adapters don't seem to be available, and the TA ones are pretty spendy, ...I've seen some examples of people getting cranks machined/drilled to accept a third chainring, wondering if anyone has done that and if so, a recommendation on where to get this sort of work done.
Unless you find a machinist who's helpful to the point of being mental, bored out of his skull, or for some strange reason has decided to do bike work pro bono there's no way you're gonna get your part machined for a lesser amount than what buying a triple or the required parts would cost you.