Notice the difference between the 2 planers? One has a nice black knob while the other has a scrap wood block. I dropped this planer and the black plastic knob cracked. So I went and bought another knob. As you can see its not on there because I dropped the planer again and broke it again. I make custom shaped surfboards so I figure I can make a custom fitted wood knob. I work well with foam, but the carpentry skills are not as fine tuned. Actually, it works well.