Ender-5 S1: https://shrsl.com/3u0px
Ender-5 S1 Ebay link: https://www.ebay.com.au/itm/394407668464
Sonic pad: https://shrsl.com/3u0q0

US store: Coupon Code：12ES5, get 5S1+Sonic pad Combo $120 off, only $479
CA store: Coupon Code：15SE5, get 5S1+Sonic pad Combo Extra Can150 off
AU store: Coupon Code：AUS150, get 5S1+Sonic pad Combo Extra AUD150 of

STL file for the devious Pythagoras cup: https://www.thingiverse.com/thing:123252

Watch the whole video of the greedy cup emptying in a vacuum:    • How To Stop The Greedy Cup  

Shop the Action Lab Science Gear here: https://theactionlab.com/
Checkout my experiment book: https://amzn.to/2Wf07x1
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