Whisk Shaker - Drill Driven Reciprocating Motion Tool

This is an experiment on reciprocating motion and involute gear modelling.
Video of action: https://youtu.be/kWj1HaLNi8o

Making tips:
- It's a prototype. Not guaranteed for long term run.
- Print the shaft at 100% infill.
- Needs 1 x 608zz bearing, 12 x M3x12 bolts, 4 x 4x15 PTFE Tube.

Last week I posted a video of drill spinning a whisk to whip cream, and it led to lots of inspiring discussions. Link of previous post: https://www.reddit.com/r/3Dprinting/comments/ipetob/as_a_maker_i_dont_make_cake_often_enough_to/

Last time I was trying to solve a small problem with a quick print.
This time I got carried away and it's more of a fun excercise to improve my skills.

I wanted to make the drill do side-to-side move, which is said to be the best technique of whipping cream.
I therefore studied reciprocating motion and involute gear, and explored using PTFE tube as linear rail.
Although the tool is not necessarily better at the job than the last one, it was a fulfilling