And so you see here some early studies of blocks, where those holes are actually coming through, and this is before the thermo-bimetal is applied, and this is after the bimetal is applied. Sorry, it's a little hard to see, but on the surfaces, you can see these red arrows.
Tady vidíte moje ranné studie bloků, kde jsou průduchy použity. Toto je před tím, než nainstalujeme bimetaly a toto je po tom, co jsou nainstalovány. Promiňte, je to špatně vidět,  ale vidíte ty červené šipky.