Info on magnets
https://en.wikipedia.org/wiki/Rare-earth_magnet
https://www.supermagnete.de/eng/safety-neodymium
https://www.reddit.com/r/Magnets/
Buying magnets:
https://www.supermagnete.de/eng/screw-on-magnets
https://www.supermagnete.de/eng/Magnet-applications/Magnetic-juggling
https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20170727120323&SearchText=countersunk+neodymium+magnet+15mm
https://www.first4magnets.com/countersunk-magnets-c41/neodymium-t137
FAQ (ask me stuff in comments and I'll try to answer and compile up here)
Q: Will this make my clubs unsuitable for normal juggling?
A: Not quite, using magnets of the size shown in this video will only add 14g of weight, and it is added to both nose and handle so balance is not heavily affected either. However, certain club on club balance tricks are made harder or easier depending on magnetic configuration, so if that is a big part of your juggling, I'd suggest getting a second set of clubs.
Intro: 00:00
Why magnetic clubs: 00:13
What kind of club will work: 01:36
What kind of magnet will work: 02:09
What tools are needed: 03:17
Magnetic configuration: 03:50
Modifying the clubs: 06:42
Thanks for watching#1: 09:05
Tips&Trix: 09:42
Thanks for watching#2: 11:07