You sir are an artist. That ball cutter is brilliant. Thankfully for me, the balls here are relatively inexpensive. Another plus for this system.Nothing at all. Just the ball. Mine uses 45 mm balls, being Cat 1, the hole is 7/8" if I recall correctly. This is truly a great system. More and more tractor manufacturers have been offering these as standard here in Europe.
My tractor came with a set of balls. I've since machined 2 more sets so I wouldn't have to move the balls around. They can just stay in the implements. I'm still one set short though but that's for an implement I rarely use.
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Using my homemade ball turning attachment here.
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I hope it catches on here as well. Currently you generally only see these on larger tractors, or on some vintage tractors that used it for a time.