Acrylonitrile Butadiene Styrene (ABS) is another common 3D printing material with popularity that rivals PLA. ABS’s structure contains a long chain on butadiene that crosses with shorter chains of acrylonitrile and styrene. The proportions of each monomer in ABS can vary. ABS is resistant to heat and to impact damage making it a durable material suitable for the outdoors. Its mechanical and thermal properties also give parts a cleaner finish compared to PLA. Due to its chemical nature, printing with ABS usually requires a raft in order to guarantee bed adhesion. This makes it a suitable material for those who have some experience with 3D printing already.