From the Highly Educated website...
"What does a perfect dab look like?
We think it looks something like this: When cooked, it will be spread so uniformly even that all will be left in your nail is a golden transparent film. Your nail will look more like a fumed tube of glass than the dirty nail you’ve become familiar with. There will be no puddle, there will be no char, no stains, nothing but the golden film. A film that is so easily wiped up that it’s satisfying just doing so. How can you obtain a perfect dab consistently? With the Highly Educated Control Tower and an IR thermometer its simple. Experience what a dab should be. Feel confident in getting everything out of it, without having to burn any of it.
Each Control Tower comes with an SE Pillar, but does not come with any capping device. "