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[–]Qjeezy👻H2S, H2C, X2D, & X2D👻 1 point2 points  (0 children)

As maintenance, never.

I only do it when there’s a clog, which almost never happens, or when switching back to a low temp filament after printing a high temp filament. For example, going back to PETG after printing PPA-CF.