The Timberline Chainsaw Sharpener is a newly patented tool that takes precision and accuracy to a new level. The chain remains on the saw and the tool clamps on the bar and allows the chain to be pulled through as each tooth is sharpened. A high-grade tungsten carbide cutter is hand turned with a handle. Only a small amount of material is removed from each tooth resulting in much longer chain life. Carbide guides are fixed at a universal angle of 30 degree while 25 and 35 degree guides are offered separately.