Abstract: A method of making duplicate keys employs the use of a scanning device for capturing the physical profile of a master key or alternately, formulating the profile as a data construct without the use of a master key. This data construct can be assigned a unique code and stored on a database for later retrieval. Once the key profile has been captured or formulated in a data base memory device, a key may be fabricated without the need for traditional key blanks in accordance with the profile data by, for example, a three-dimensional modeling device such as a fused deposition modeling device or stereolithographic device. Alternately, a milling device or high energy beam in conjunction with a metal slug can construct the duplicate key, or an injection molder using high density molding resin can be used to construct the duplicate key.