PVA is a water-soluble material that is widely used as a carrier material without the need for chemical or special treatment. Leave the part in a warm water bath to help it dissolve faster. After dissolving, no residue with a smoothing effect remains on the model surface. It can be processed with PLA, TPU, PA (nylon) and other consumables to print extremely complex shapes or support materials with a partially closed cavity model. It is also a good choice for printers with multiple nozzles.