Step 1: Debug the tattoo machine to the best condition A: The sound is bright, dense and stable; B: The speed is high and the torque is high.
Step 2: Check whether the tip of the tattoo needle is damaged.
Step 3: Remove the "needle fixing screw" with special equipment and remove the needle.
Step 4: Insert the tattoo needle bar from the upper entrance of the needle tube, and hang the upper part of the tattoo needle bar on the "needle bar fixing button" and fix it.
