Common tattoo guns work off the use of electromagnet coils (patent here)
. Since I haven't had much success with coils in the past I have decided to use the rotary method.
As in the use of most rotary tattoo guns there is no mechanism to convert the rotary motion of the motor into a linear motion. To create a more accurate tattooing gun I must create this motion without loosing too much torque through friction.
To do this I plan on having a separate linear mechanism in the shaft connected to the cam through a bent wire. This also allows for a more functional method of changing needles by having an opening in the pipe allowing the user to simply unscrew the needle. As well as creating a much more accurate gun.
The gun must be comfortable to hold and easy to use. I will also try to avoid as much vibration as possible, by counterweights ect.