▁case ). ▁So on ▁after ▁Def ense ▁Dist ributed ▁succeeded ▁in ▁design ing ▁the ▁first ▁working ▁blue print ▁to ▁produce ▁a ▁pl astic ▁gun ▁with ▁a ▁ 3 D ▁printer ▁in ▁May ▁ 2 0 1 3 , ▁the ▁United ▁States ▁Department ▁of ▁State ▁demanded ▁that ▁they ▁remove ▁the ▁instructions ▁from ▁their ▁website . ▁After ▁Def ense ▁Dist ributed ▁released ▁their ▁plans , ▁questions ▁were ▁raised ▁regarding ▁the ▁effects ▁that ▁ 3 D ▁printing ▁and ▁w ides p read ▁consumer - level ▁C NC ▁mach ining ▁may ▁have ▁on ▁gun ▁control ▁effect iveness . ▁ ▁In ▁ 2 0 1 4 , ▁a ▁man ▁from ▁Japan ▁became ▁the ▁first ▁person ▁in ▁the ▁world ▁to ▁be ▁imprison ed ▁for ▁making ▁ 3 D ▁printed ▁fire ar ms . ▁Y osh it omo ▁Im ura ▁posted ▁videos ▁and ▁blue print s ▁of ▁the ▁gun ▁online ▁and ▁was ▁sent enced ▁to ▁j ail ▁for ▁two ▁years . ▁Police ▁found ▁at ▁least ▁two ▁guns ▁in ▁his ▁household ▁that ▁were ▁capable ▁of ▁firing ▁bul lets . ▁ ▁Comput ers ▁and ▁rob ots ▁▁▁ 3 D ▁printing ▁can ▁also ▁be ▁used ▁to ▁make ▁la pt ops ▁and ▁other ▁computers ▁and ▁cases . ▁For ▁example , ▁Nov ena ▁and ▁VI A ▁Open Book ▁standard ▁laptop ▁cases . ▁I . e . ▁a ▁Nov ena ▁mother board ▁can ▁be ▁bought ▁and ▁be ▁used ▁in ▁a ▁printed ▁VI A ▁Open Book ▁case . ▁ ▁Open - source ▁rob ots ▁are ▁built ▁using ▁ 3 D ▁printer s . ▁Double ▁Rob ot ics