What filament is best for 3D pens? PCL, PLA or ABS?

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Sunlu SL-300Plus 3D Printing Pen - Create 3D Art Effortlessly – 3D Printing Perth - Cirrus Link

Buy Wholesale China Custom Pcl 3d Print Filament 1.75mm Pla 3d Drawing Pen Filament Colorful 1kg Printing Pen Filament & Pcl 3d Print Filament at USD 2

ABS vs. PLA Filament for a 3D Printing Pen - MYNT3D

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