simple tattoo machine

2021/7/14 I have designed a simple and new reciprocation linear accessory that converts rotational motion to linear motion. I made a reciprocation sawing machine using this technique. Now I use the same mechanism to make a simple tattoo machine. Hope it will give you some new idea. Have a nice day. This video contains some dangerous actions that may involve potential injury to your health. Please do not follow the procedure unless you understand the tattoo mechanism and related potential risks. All of your action is on your responsibility. You will need two 3mm balls, 1 Sleeve Plain Bearing that inner diameter is 6 mm and outer diameter is 8 mm, and several M3 bolts and nuts. Also, you will need an Organ sewing needle (industry type).