Operation Instruction of HEWER MultiSAFE Deburring Knives

Operation Instruction of HEWER MultiSAFE Deburring Knives

 The Hewer MultiSAFE 850 and 860 series of safety cutters are unique cutting tools in the market. In addition to the important design of safety cutters, the other functions those make the cutting and deburring works more efficient and effective.

The difference between operation of safety cutter in cutting anddeburring works

In general, the operation of safety cutters in cutting works is cut from the top to the bottom vertically, or cut towards the body. During the cutting process, the hand-arm-thumb system is lined in a straight line or close to the straight line. However, in the operation of safety cutter in deburring works, the cutters are moved in an opposite direction from the body horizontally and the hand-arm-thumb system is bent downwards slightly (ulnar abduction). The movement violates a principle of ergonomics and can cause joint and muscle strain and eventually, golf’s elbow.

How to operate a safety cutter in cutting and deburring properly

•The blade length can be adjusted to ideal in  cutting / deburring work. 

Cutting

1. Hold the Hewer MultiSAFE 850 / 860 series safety cutter vertically by hand during the cutting work.

2. The thumb pushes the slider forward to expose the blade to the outside of the handle.

3. After the blade is deeply cut into the material, the thumb leaves the slider and begins the cutting process.

4. When the blade leaves the cutting material, the blade automatically rebounds into the handle and completes the cutting process in safe.

 Caution

i. Cutting injuries may be caused if the thumb is placed on the slider throughout the process and the blade is remained outside the handle.

ii. During the cutting process, try to keep the hand-arm-thumb system in a straight line or close to the straight line to avoid joint and muscle strain.

Deburring

1. Hold the Hewer MultiSAFE 850 / 860 series safety tool horizontally by hand during the deburring work.

2. The thumb pushes the slider forward to expose the blade to the outside of the handle.

3. Hold the safety cutter with the palm instead of the thumb to maintain the blade in a state exposed to the outside of the handle.

4. Move the thumb to the front of the handle to enhance the effect of deburring.

5. After finish the deburring work, loosen the palm and let the blade rebound into the handle slowly and automatically.

 Caution

i. The deburring work may not achieve the best results if the thumb is placed on the slider during the whole process.

ii. During the deburring process, try to keep the hand-arm-thumb system in a straight line or close to the straight line to avoid joint and muscle strain.