well again just trying to help you here!
But if your blades on the tiller were falling off due to mounting hardware not up to the task of holding therm on, and then them bending due to being welded on
it sort of says there NOT made strong enough for the dirt work your using them in!
and it was a most likely an engineered deal, being it was maybe made for lighter work than your asking of it
making new custom Stronger parts will IMO< just have you finding the next weak link and new repairs, (maybe the drive box/gears, or??)
been down many roads over my life time of modifying /building up one part only to find the next weak link, its just how it works, and in most cases, it was always cheaper to just buy something already built better, than trying to make a weaker thing stronger , as most things built today, they know there limits from the engineer room and all parts are to work in a line, modify one part down stream or up, and you end up playing keep making next part better and so on and before long you sank a way more than it would have costs to just upgrade from the get go! just the nature of the beast
BUT if your dead set on exploring things with custom made parts,and nothing wrong with it if its what you want to do! as I stated just trying to help here no bash intended!
maybe try some places I listed below ;
I have NO clue how close or far they are from you as MI is a fairly large state and al the info I have to go by, nor any personal experience with any, some have been around a long time, and that some times means they are liked by some!
so I will add a few I found by doing a search on google maps, a few dozen came up all over, so there should be one near you you can maybe try and have a talk with , I know you were maybe hoping for someone to have personal experience with one they could recommend,
but it doesn't seem like anyone here has that to pass on,
so, hope this maybe helps ( did again, Google maps, and typed in metal machine shop and used center of state as a starting point, LOTS of shops came up for me)
good luck and let us know how you make out!
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