Hi Breitling
Thank you ever so much for your hard work and posting it here.
I am definitely going to attempt to make this, I am DIY illiterate but from your instructions
i feel i can confidently make a good bodge job of it 
I have a few questions at present, if i may? as i would like to get this near as damn it to yours 
- what is the diameter of the 4 threaded rods?
- How long is the little threaded rod?
[li]how big are the spacers, Diameter and length?
(my saucers are 32cm diam x 5cm depth, spacers = 5cm or 4cm, i think 4cm?)
(the 20cm saucers only have 3cm depth, that is not enough is it?[/li] - Does the tube have to be aluminium or can it be a white plastic tube?
[li]Whats the diameter of the fan?
I have found this kit (basic, lower image) Is this motor too powerfull or OK?
I take it, once completed i will be able to locate this anywhere, i.e. it don’t matter if in direct sunlight?