Holder
This is the tutorial for the holder of the Swiss Army Knife
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Step 1:

Make two circle with diameter of 2 mm, and the distance between the circles is 0.01 mm and the distance between the circle to the centre line is 16 mm
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Step 2:

Revolve the two circle with the angle of 360 degrees
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Step 3:

Make triangle two cut between the holder with distance of 10 mm
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Step 4:

The holder is finished