It’s easier to push the lip balm tubes in more deeply with the entire tray flipped over onto its back, like a helpless turtle.
I also wanted to remind everyone that cutting off the tops is a total personal preference. This is how I have always done it; plus I love the smooth finish. But feel free to pop on the cap (over the lip balm lip) and call it a day. After all, your time is money and that trim time adds to the unit cost per lip balm. But think (and rejoice) of all the time you saved filling 50 lip balm tubes at once (rather than that gosh darn individual dropper method). Now, go forth and make the most luscious, cost-effective lip butters on the planet. You’ll make a lot of lips soft and happy.