The plastic and rubber gears on this unit, are easy to wear-out . They can be removed for replacement, but the company does not offer a replacement part, they want you to purchase a new motor base for the plastic gear, and a new blade attachment for the rubber gear. This is very unfair and bordering on larceny. If the part is easily removable, then there should be a replacement available at a reasonable cost. I will research this problem further to see if there are any recourse to the Company's ethics. read full review »