PETG filament is a polyester filament for FDM 3D printers — tougher and more heat-resistant than PLA filament, easier to print than ABS filament. Its full name is polyethylene terephthalate glycol-modified: the “glycol-modified” part is what stops the material from crystallizing, so it prints at moderate temperatures instead of needing industrial equipment. If you want […]
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This is an original science-communication / product-storytelling article. It brings together three key studies on whether cognitive training can raise intelligence and links their findings to the real-world use of low-temperature 3D printing pens designed for children. Facts that can be cited directly are marked with “【Source n】” in the text, and a full list […]
Introduction A 3D pen feels a bit like a magic marker and a glue gun combined. Squeeze the trigger, and a line of melted plastic flows out so it can be “drawn” into space, hardening in seconds. That simple action turns a sketch on paper into a tiny sculpture, a gadget, or a piece of […]



