Rifling —
Uneven or wavy wear of a reel and bedknife. A cutting unit which is rifled will not cut acceptably due to the variance of contact as the reel turns ( a rifle cut or streak.) The most common cause for uneven bedknife and reel blade wear is due to heavy or hard contact between the reel and bedknife due to over tight adjustment. Several heavy contact points generally develop across the knife and/or reel and create greater amounts of wear in these areas. A rifled mower can only be corrected by regrinding of the knife and reel.