I used one of these as a replacement bracket for my 3D printer and it offers much more stability than the original bracket. The only complaint I have is that the included screws were too long for my stepper, but the included nuts acted as spacers, although it would have been nice if the short set was a bit shorter. It would also be nice if someone made them with motor mount slots to make alignment easier to fine tune, but since I couldn't find anything like that I just had to get by.
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