yep, juggling at its finest
how it works:
1.reagent 1 becomes all salt
2.reagent 2 is used to dupe the atoms required for 1/3 of the product (that results in element 1
3.set reagent 2 temporarily, and bring element 1 as well
4.juggle with the two
5.bring reagent 2 whilst preparing next reagent to become all salt
6.deposit element 1 for later
7.repeat steps 2-6 for the second element, then steps 2-5 for the third
8.build the product using the three elements that were made earlier
9.finally, i made a failsafe so the machine won't crash
10.repeat

also, i have reached min height for sure