pencil sharpener

i should try to make every week some fast done rendered work in this case, but i am lazy by nature. it would be a very good exercise to hold my knowledge alive.
i need this things in my job, but not to often. mostly i have to design things in a vector based style, in 3D but without textures on the surfaces.
to draw in this case can be very simpel. this pencil shrpener needs only some minutes. the most work to do things like this is creating the environment including good light and all this things.
please give comments. maybe it will help me to work more in this case.