I printed a zombie head a week ago and I don’t have my filament detector on as I keep a eye on I that night 5 days into the print I forgot to slow it down overnight as I new it was getting low well you can guess what happened run out printing about 20 mm about the print so I stoped the print loaded some more filament and lowered the print well looks like a skull so I got my pen out and just plaid around with it well it’s good for my headphones the moral of this is sometimes failed print can be used