PVB is a type of filament designed for post-processing and removal of layer lines to achieve a very smooth surface with the Isopropanol. You can spray or dip the print depending on the effect you want for a smooth surface.
SMARTFIL PLA: Filamento PLA para impresora 3D
Buy this PCL filament if you need a top material for your 3D pen. With this material, you and your kids can quickly realizee good handmade 3D prints.