Man i love you this build has made me invincible. I have won every single match till now. You ROCK!!!!!

This isn't really that bad of a build but I just wanted to say just so you guys are aware and anyone who stumbles across this guide in the future that you do NOT need to sell an item to get your infusion. You can have your 6 items and then buy an infusion at the shop. Even after the recent nerf, infusions are extremely powerful and useful with high value for their cost. Simply click on the infusion you would like (crystal in this case) or any consumable for that matter while at the shop and buy. It will not replace any items it will simply be consumed immediately. So if you make his build definitely do NOT sell your clockwork to buy an infusion and then waste all that gold buying it back. If you have that much gold you might as well just double infuse. Especially clockwork. This guide doesn't provide major damage so clockwork is extremely crucial so that you may bust off as many big red buttons as possible (cool down is normally 90 but only 45 seconds with clockwork). Again never sell items to buy and infusion consume it directly at the shop just be sure you want it at that exact moment as the clock starts counting down immediately obviously as you are using it right away as oppose to stashing it in your inventory but if you have 6 lvl 3 items it's so late anyway I'm sure you probably want that infusion right away anyway.

You can just cut 1 out. The one u dont want, ya know?

Joule are starting to be my fav to play !! Thank you for the build !!

Would it be better to buy a Warhorn instead of Clockwork better? Even though the Warhorn is like 800 coins more expensive, and gives 20% less CD, but it also gives a huge DPS boost against creeps, and an activate ability that tremendously boost you and your teammate's speed. And apparently by doing so you would not need to bother selling the iron guard contract.
Alternating Current would only boost once per two attacks, so wouldn't buying shatterglass, which adds around 550 damage to the ult (about 270 higher than alternating current), 130 damage to the rocket leap (about 60 damage higher) being a more preferable option?

The Crystal Infusion is a consumable that adds 72 Crystal power and 35% CD at lv12 for 3 minutes, which means by selling one of your items, and consuming this item and buy the original item back, you would spend (Sold item original price)/2 + 500 total, but gaining three minutes of huge advantage.

How does one have seven items at one time?