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I just printed this and I like it very much. Very simple and printer-friendly design. Thanks. If I can make my suggestion, the 90mm version may spread apart after some use (change of spools) if you print it wih few walls. I'd make a wide circular notch on the bearing inserts (and corrisponding recesses on the stand) to "lock" it in place when the spool is reinserted. Does it make sense?
I would probably do it myself but the source files are not included.
Besides, thanks for your work!