Double length infeeds (DLI's) are used to position and feed logs, or blocks, to canters for processing into cants and flitches (side boards).

The log is scanned and optimized prior to entering the double length infeed.  The optimum rotation and sawing solution are determined by the scanning and optimization system.  An automatic log turner, with single or double spiked rolls, is mounted in front of the double length infeed.  The log turner rotates the log based on the rotation angle determined by the rotation optimization.

The logs are fed onto the double length infeed bottom chain as it is rotating.  There are fluted side rolls that close on the log and still allow the rotation to complete.  Overhead hold down rolls are sequenced onto the logs to stabilize them as they advance through the double length infeed.  In most cases the logs are rescanned and re-optimized in the double length infeed.

The double length infeed will skew and slew to provide the optimum alignment to the canter chipping heads.  On a four sided canter the infeed will also tilt and slew for optimum positioning to the bottom chipping head.

At the outfeed end of the double length infeed there are spiked feedrolls that sequence onto the logs to hold them steady and feed them into the canter chipping heads.

English Terminology: Double length infeed, canter infeeds, slew, skew, tilt, spike rolls, spiked, sawmill, wet mill.