Step 1

A. Adopt the flap disc to grind the surface

B. The die holder center line align with the vertical holder plate center line, This can make sure the nail cutter vertical straight

C. Grinding the nail cutter surface 

Step 2

A. Use a red mark pen daub the flat surface, where been grind by step 1

B. Use a height gauge to mark a cross-shaped center-line

C. Mark the cross center line

D. Note: do the cross center-line for all the nail cutters which need grind at a same time, to make sure all the center point at same height.

Step 3

A. Turn the die holder to a suitable angle to grind the nail point angle

B. Do not grind the nail point to the final position.

First grind both of the nail cutters(a pair) to the same depth, (to check if the same depth, align the two cutters at bite state, then from top view, it will combined become a point at the bottom,no step to become two point dots, it mean become same depth), then compare the both side edges of the nail cutter point between the two nail cutters (top view), to find if any difference, if there is a different, the edges lines not match then adjust and grind to remove the difference.

If the difference not been removed, the two cutters cannot bite properly, it means the wire cannot be cut properly. Turn the left hand-wheel(working plate moving forward and backward) to remove the difference. 

Note:the way to compare if the two cutters are same,please refer below image(here need a parallel block or a ruler)

C. After remove the difference, then grind the nail point to the final depth (to the marked cross point) 

Compare the both side edges of the nail cutter point between the two nail cutters (top view), to find if any difference, if there is a different, the edges lines not match (Parallel ruler or block should be placed aside)

Step 4

A. Rotate the die holder (vertical direction), to get a suitable angle To grind the nail cap( nail head) angle

B. The center line no need change

C. Grind the depth, till the distance to the nail point angle around 0.05mm (make sure do not reach the marked cent-point (nail point dot)

Step 5

Grind the chip (swarf) angle

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