Toothbrush - 15 Houdini FX Mantra Shader for the Glass and the Floor

Hi Helge, and thanks again for your all your tutorials, I have a problem with the glass material.
I did all steps said in the video but my glass is more similar to aluminum, it's glossy and not transparent, I did several tests, I also changed the environmental map several times to see if that was the problem, but I can't solve the problem.
Do you know what the problem might be?
Thank you

This was very helpful! Thank you!

wonderful....

Can i make diamond with refraction, reflection and dispersion in houdini?

That was cool - as you know karma has no Ambient Occusion shader - potentially - is it possible to write such a shader?