▁properties ▁similar ▁to ▁those ▁of ▁conventional ▁manufact ured ▁met als . ▁ ▁Electron ▁beam ▁mel ting ▁( EB M ) ▁is ▁a ▁similar ▁type ▁of ▁add itive ▁manufact uring ▁technology ▁for ▁metal ▁parts ▁( e . g . ▁tit an ium ▁allo ys ). ▁E B M ▁manufact ures ▁parts ▁by ▁mel ting ▁metal ▁pow der ▁layer ▁by ▁layer ▁with ▁an ▁electron ▁beam ▁in ▁a ▁high ▁vac u um . ▁Un like ▁metal ▁s inter ing ▁techniques ▁that ▁operate ▁below ▁mel ting ▁point , ▁E B M ▁parts ▁are ▁void - free . ▁ ▁B inder ▁jet ting ▁ ▁The ▁b inder ▁jet ting ▁ 3 D ▁printing ▁technique ▁is ▁the ▁de position ▁of ▁a ▁binding ▁ad hes ive ▁agent ▁onto ▁layers ▁of ▁material , ▁usually ▁pow der ed . ▁The ▁materials ▁can ▁be ▁cer am ic - based ▁or ▁metal . ▁This ▁method ▁is ▁also ▁known ▁as ▁in k jet ▁ 3 D ▁printing ▁system . ▁To ▁produce ▁the ▁piece , ▁the ▁printer ▁builds ▁the ▁model ▁using ▁a ▁head ▁that ▁moves ▁over ▁the ▁platform ▁base ▁and ▁depos its , ▁one ▁layer ▁at ▁a ▁time , ▁by ▁spread ing ▁a ▁layer ▁of ▁pow der ▁( pl aster , ▁or ▁res ins ) ▁and ▁printing ▁a ▁b inder ▁in ▁the ▁cross - section ▁of ▁the ▁part ▁using ▁an ▁in k jet - like ▁process . ▁This ▁is ▁repeated ▁until ▁every ▁layer ▁has ▁been ▁printed . ▁This ▁technology ▁allows ▁the ▁printing ▁of ▁full ▁color ▁pro tot ypes , ▁over hang s , ▁and ▁el ast