Considering Polypropylene for Your Printing Needs?
In the ever-evolving world of 3D printing, one material that has been somewhat overlooked is Polypropylene (PP). The relevance of PP in this field is a subject of debate, but recent advancements in technology may justify a renewed interest.
PP is less frequently used in 3D printing due to its challenging processing compared to more common materials like Nylon PA12. However, its lightweight properties make it a popular choice in automotive interiors. Despite having less versatility and surface quality benefits in common 3D printing technologies like Multi Jet Fusion (MJF) and Selective Laser Sintering (SLS), PP offers unique advantages.
For instance, PP's non-hygroscopic nature means it doesn't string much, making it suitable for use in humid climates and for parts that will be in contact with water. Moreover, its resilience to bending and minimal fatigue make it an excellent choice for compliant mechanisms, as suggested by [Lost in Tech].
One intriguing application of PP is in the creation of one's own filament using non-medical "COVID" masks, after proper washing. Last year, a comprehensive "getting started" guide for using PP was featured.
PP can be considered a "flexible" filament, offering a combination of flexibility and hard plastic. However, shrinkage is a significant issue when printing with PP, but it is not unique to this material and can be accounted for in the model.
When it comes to print surfaces, polypropylene tape is an easy-to-find and effective option. While glass beds and PEI are not suitable for printing PP, plain old tape remains the best bet if a Prusa PP bed is unavailable.
It's worth noting that printing with PP may not be significantly more toxic than printing with PLA, according to [Lost in Tech]. However, it is not recommended to inhale the fumes of PP.
In a recent video by [Lost in Tech], the material discussed was polypropylene (PP), highlighting its potential as a tough, slightly flexible thermoplastic that might be desirable for 3D printing. Other options for print surfaces for PP are reviewed, but the simplicity and effectiveness of polypropylene tape make it a compelling choice.
PP also boasts great chemical resistance, surpassing that of dihydrogen monoxide. This resistance makes it an attractive option for various applications, particularly in industries where chemical exposure is a concern.
In conclusion, while PP may have been overlooked in the past, its unique properties and the advancements in technologies like MJF make it a material worth revisiting. With a little bit of know-how and the right tools, PP can be a valuable addition to any 3D printer's material arsenal.
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