I'm trying to simulate the effect of glass for the kettles but i seem to have no idea how to do it. I tried using a dielectric material but this is all i get. No transparency whatsoever. If i play with the refraction index i get more or less specularity but still no transparency. As if no light is actually refracted into the glass or reflected back. On 1.5 IoR (default) the glass is completely black. The image below was rendered with the IoR set to 0.8. Any ideas how i can get this to work?