The steam engine went together well. My 9 year old grandson did the assembly under my watchful eye. It probably took 2.5 hours. Got it running right away. Very pleased with it as a whole.
My only gripe relates to items needed, but never discussed in the order section or even in the instructions. I saw a YT video that indicated you needed steam engine oil somewhere, along with light oil for moving parts. Nowhere in the assembly process is that steam engine oil covered. I think I figured out where it goes, but did I add enough, too much, or whatever, I have no idea.
The order page should at least have a link to where you can get the steam engine oil. Also, the kit should probably come with (or have links for ordering) appropriate hobby syringes for squirting in distilled water, steam oil and even for filling the alcohol tank. Those are some tight spaces for trying to pour those liquids.
If those fluids were covered better, instructions and sources, the whole project would be very easy.