nice item, fast running engine, buts needs quiet hot flame to run. very good for Demonstration purpose and study.
It's really wonderful how smooth this model works! I really recommend it! It comes with some spare parts in case something is damaged. And it also comes with a couple of leds in case you want to use them instead of the bulb. On the bad side there's no manual or instructions. In case you need, I can tell you that it is mandatory for you to use alcohol 95% for the burners. It provides just the right heat power to work. You must not use any other alcohol, oils or fuel. You don't need also any water (it's not a steam machine). Once everything is already set, you just have to start the fire, wait for a minute or two and turn manually the main wheel once.