EXTRA CRADLE IMPROVES SLASHER SAW’S PERFORMANCE

13-R-27
Fri, 11/15/2013
Technical Release

Slashers: safety

INTRODUCTION: Kenmack Lumber Company in Newport, Ohio, built a second deck or cradle for use with its slasher saw (sawbuck). This innovation improves the efficiency and safety of handling and bucking long, treelength hardwood sawtimber at the log deck when using the slasher saw.


Fig. 1: Extra cradle provides an additional 18-foot section on which to
lay a long piece of hardwood sawtimber during the bucking process.

GENERAL FEATURES: Kenmack Lumber’s CTR slasher saw includes an 18-foot-long cradle or deck. Kenmack fabricated another 18-foot-long deck to place on the other side of the slasher saw blade. This additional deck provides 36 feet of length to lay down a long sawtimber tree when bucking it into log lengths for loading. Kenmack built two holes in this cradle into which the operator can insert pins in order to anchor the extra section in place.

OPERATION: The loader can easily pull the long piece of sawtimber forward and across the entire 36-foot length of the cradle when the operator is ready to buck it into sections. Laying the entire tree down this way reduces the moving and twisting of the tree and the grapple, thus improving safety at the loader/landing. Since the entire tree bole is resting on the cradle deck, there is less pressure on the bar saw when logs are being sawed. Note: It is important to level off the area under the entire 36 feet, so that the two cradles are on the same plane. The extra cradle was built with cross-pieces at two-foot intervals, to guide the operator in making accurate cuts.


Fig. 2: Both the slasher saw and the extra cradle fit compactly and
conveniently onto the knuckleboom loader trailer when it is time to move the equipment

Some big logs are very difficult to handle, and turning and lifting them puts extra stress on the knuckleboom loader. Using these two cradles together minimizes lifting up and moving around huge pieces of very large sawtimber.


Fig. 3: The additional 18 feet of deck/cradle length improves performance
and safety when bucking logs with the slasher saw.


Fig. 4: Metal pins connect the extra cradle to the
slasher saw/cradle.

SPECIFICATIONS AND COSTS: Kenmack constructed the extra cradle using four-inch square tubing made of 1/8-inch-thick steel. In hindsight, Mack (co-owner of Kenmack Lumber) believes that quarter-inch-thick steel would have been better to use. Kenmack Lumber estimates that it invested approximately $2,000 of materials and labor costs into building this extra cradle.

Chuck Beach
Weyerhaeuser NR Company
108 Briarwood Place
Parkersburg, West Virginia 26104
chuck.beach@weyerhaeuser.com

Reviewed by:
Rick Meyer
Appalachian/Southwide Region Manager