The knife has been modeled with Cinema 4D R14 according to world scale (compatible with Cinema 4D R12+). All smooth objects still have the hypernurbs enabled to choose level of smoothness. The blade can move in and out.
The obj file comes in three versions. Low, medium and high poly object. See the wire frame images to check the mesh density.
Two versions Cinema 4D versions included; one with regular Advanced Render materials and one with V-Ray materials.
The presentation images are rendered with VrayforC4D.