I bought a Black and Decker clipper at a local hardware store but figured it would be wise to have an extra set of clippers so I don't have to interrupt the project to re-sharpen them before I do this resume project. But unfortunately! If it's dark outside after sharpening, you still have to wait until the next day. I love the versatility of changing blades and it's easy. FINISH THE WORK Then sharpen both sets of blades while watching a good movie!