A system for preparing a bone implant includes a cutting guide having a body including a plurality of sides that together define a cavity that is accessible via an opening defined by a first side of the plurality of sides. A second side of the plurality of sides defines a plurality of slots and is disposed adjacent to the first side. Each of the plurality of slots is in communication with the cavity that is sized and configured to receive a bone implant therein, and each of the plurality of slots is located at a different location of the second wall to facilitate cutting a bone implant into one of a plurality of sizes.