I just took a look at the Hydra insert and it seems to enable wider spools? Does it do anything else? I’m not sure.
I guess the first thing that comes to mind is, do you need it? I bought a bunch of overture/polymaker 1kg filaments and they seem to fit fine. I printed more bambu-style spools with an internal spacer and transfer from the cardboard spools. I would make sure that the spools that you’ll be using need the Hydra’s more accommodating space, otherwise it seems like it’s not necessary.
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