three part closed lid self extinguishing ashtray
thingiverse
A three-part device is constructed from a cup, a top for the cup, and a lid for the top. This assembly can be used as an insect trap or self-extinguishing ashtray due to its limited oxygen supply. When using this design with Colorfabb PLA, results are favorable at smaller scales but larger prints allow more oxygen in, giving the 300°C cigarette butt end sufficient time to melt through the material. However, for optimal performance, ABS or a glass transition temperature of +90°C is recommended, necessitating the use of closed printers, bed adhesion glue, heated beds, and Brim. When printing with ABS, this design tends to shrink, curl, or warp, making nylon a more suitable option, especially when using Taulman3D under flex settings without retraction.
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