Handle's design incorporates the natural wrist angle of approximately 35 degrees. The handle is constructed so that the tool's axis is better aligned with the forearm, significantly reducing muscle fatigue. It allows the operator to rotate the arm slightly to change the angle of the file, and still apply the necessary pressure to keep the file in contact with the work piece. Studies report that even repetitive filing jobs have become more comfortable, safe, and efficient as a result of this design.
Ergonomically safe designs are being studied and used to reduce or eliminate fatigue, discomfort and stressors. Cumulative Trauma Disorders (CTDs) are an occupational illness to which industry is becoming more aware, and ergonomic tools are becoming more important.
The grooved Soft surface of the Ergonomic File Handle provides a perfect, non-slip grip for the hand.
Insert the file tang into the lateral hole closest to the end of the aluminum handle. If the tang protrudes through the soft grip, you must grind off enough to allow it to go through the aluminum only (so that it is held securely in place), but not so far as to injure the operator's hand. Next, alternately tighten the internal screws to lock the file into the handle.
Aeronca x 100 weiser 6south? or main r3a2