Just started out, no capital, I created my own using this method and thought it such a good idea that it would work for others doing engine swaps and I could make a few quid. Then if it worked start up doing them commercially.

It is a great idea and works.

Not a lot of profit in just doing flanges as the first setup for each one cost a lot of money and then cutting and filimg the rings, getting the rings welded on fetching and carrying and posting.

Around £15 profit in a pair of V6 flange plates. Only sold two pairs so far!