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Okay I understand all of the info however on the center diameter of the spool how are the rods sized or are they undersized a bit? In other words my esun spools have a center hole of 52 mm and I would use the the standard base arms, the spool would require 75 mm rods but how is the center hole of 52 mm addressed?
Are supports needed? I think it would print with bridging over the center hole but wanted to see how u all were doing it.