Bird Feeder for Fat Balls

thingiverse

Simple cage for fat balls with a ring for the birds to grip. Inner diameter is about 56 mm but you could scale it up for larger balls (I make my own so this size is OK for me). There's a lid to stop birds from getting trapped inside and there are hole for hanging. Using PLA it'll most likely come along with lots of stringy stuff. I just run a kitchen blowtorch over it (quickly!). It's delicate but seems strong enough in use although it won't stand up again penguin attacks...