3D Printing By Don Slusarczyk | don@slusarczyk.com As seen in the October 2025 issue of Model Aviation. WITH 3D-PRINTED AIRPLANES becoming more popular, there are now many Facebook groups and online forums that discuss this topic. I have read about a common error that occurs, especially to those who are new to 3D printing, in regard to lightweight polylactic acid (LW-PLA) filament. There are two kinds of LW-PLA filament: active-foaming and "pre-foamed." The error that occurs most often is that people buy pre-foamed LW-PLA and try to use it on a design that is intended for…
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