Step 1: What You will need
Tape (Electrical works well)
2 Bar Magnets (or a lot of disc magnets)
(I used the surplus from www.kjmagnetics.com)
Lego Pieces: (if you decide to make it using Lego)
1 9V Motor
1 9V Battery Box
1 Lego Cable
1 6 x 8
2 6 x 10
4 1 x 2 (the ones which have the slots to hold a motor)
12 1 x 8
4 1 x 2
2 1 x 6
4 1 x 8
6 1 x 10
1 Crown Gear 24teeth
2 24 tooth gears
2 8 tooth gears
Some bushings and pins to connect it all
Step 2: Gear Train
Step 3: Build a frame
Step 4: Unresolved Issues
There were better ways to mix and blend but this one used magnets and Lego and was entertaining to watch. I didn't use this for drinking purposes due to some cleanliness issues but it sure did mix that iced tea well.
I used a plated magnet and to my knowledge it is plated in zinc. Not wanting to drink zinc I planned to cover the magnet in some form of non toxic plastic. In the past using some spray on liquid rubber to waterproof my use drive and I was hoping to find some similar to coat the magnets.
Also if anyone was planning to make this for drinking purposes I would recommend building a specialty cup that has the magnet fixed to the bottom so that it isn't a choke hazard.
Thank you and I hope you enjoyed this Instructable!