The best tool there is to reduce downtime when cutting firewood or sawmill logs is a good log jack.
This jack can handle logs up to 20" in diameter and raises them 6", making it easy to cut from the underside as well as the top to avoid pinching the bar. Equally important, the 6" clearance makes it possible to cut without ever having the chain touch the ground, which means less saw sharpening.
The jack is made from 6061 aircraft-grade aluminum, except for the steel hook and fasteners. The 49" long handle is made from aluminum tubing. A lift bracket on the hook lets you use your foot to quickly release the hook from the log for repositioning the tool. All components have a lifetime guarantee.
Made in USA.