First of all, not an engineer. Clueless to proper lingo or terminology.
Project. Looking to create a compact, pen like device by using a 12v dc motor to create a reciprocating motion. Kind of similar to a sewing machine or even a tattoo pen. The reciprocating shaft needs to travel a 1 to 2 inches. The entire mechanism needs to be in a straight line, light weight with minimal vibration and easy to minor maintenance.
This is the best example I found to demonstrate the desired motion and shape. https://youtu.be/8MdA1leM6Y0
As far as rpm and torque. No idea but portable sewing machine-ish might better describe these types of stats.
Another criteria is the utilize off shelve parts. Like with the YouTube example, no idea how I could design the cam barrel.
Thank you in advance for your valuable expertise.