Abstract: A new and improved adjustable casting mold including a mold base having a generally rectangular configuration. Included in the device is a fixed mold form having a generally L-shaped configuration. The fixed mold form is integral with the mold base offset from a center portion thereof. Also included in the device is an adjustable mold form having a generally L-shaped configuration. The adjustable mold form is positionable on the mold base and positioned against the fixed mold form. The adjustable mold form is positioned against the fixed mold form to create a casting area. A clamp assembly is removably positioned against the adjustable mold form and the fixed mold form. The clamp assembly is secured thereto by two washers and two wing nuts. The clamp assembly serves to secure the adjustable mold form to the fixed mold form.