ensure that every vertex has a normal
ensure that every vertex has a normal

blonkm/rubiks-cube,minakhan01/RubiksHarmony,blonkm/rubiks-cube,minakhan01/RubiksHarmony,minakhan01/RubiksHarmony,blonkm/rubiks-cube,minakhan01/RubiksHarmony,blonkm/rubiks-cube