I'd just live with it. It will look the same after your next PVA print... I tried to keep the BB core clean all the time but I gave up at some point.
cloakfiend 995
I haven't used PVA that much, but if you want it to look a bit nicer, an easy thing to do is get a scalpel, or sharp blade and simply trim it off carefully, like shaving, obviously not cutting into the nozzle itself, should take you less than 10 seconds. I tend to hold the blade in my fingers rather than attaching it to the holder as it has less power that way. I tend to scrape any nozzle that looks like its building up an outer shell of pla, or whatever. Don't scrape the bottom though, just the sides. I've done that on my old UM2 for three years straight and had zero issues. Nozzle still looks like new.
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Dim3nsioneer 557
This is carbonized PVA. Best thing to my experience is to take it out and use either your finger nail or a brass brush in order to remove it.
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