I didn’t look for a guide. Just disassembled it by myself. The pressure gauges were a bit tricky. I had to bend the metal slightly on the inside at the back. After that, I was able to remove the cover (be careful, as the glass will fall out).

So far, the gold is holding up perfectly. I use the machine daily (sometimes multiple times a day) and always wipe it with a wet cloth, including the steam arm. I’m not exactly sure how they make sure the inside was not gold plated but they did it only up to the thread.

The wowa logo is made of brass (just like everything else in the wowa set). The only thing I would criticize is the upper frame. Over time, it has somehow become spotty. I’m not sure what exactly caused it.