Ok so I'm done, here are the final photos at different temperatures.
I don't know why the photos are so small, you really have to click on them to see anything sorry.
Uncooled, DeltaT of 31.1
°C, zoom off 400% for each photos
https://www.iceinspace.com.au/forum/...1&d=1741953687
Cooled at 20°C
https://www.iceinspace.com.au/forum/...1&d=1741953687
Cooled at 15°C
https://www.iceinspace.com.au/forum/...1&d=1741953687
Cooled at 10°C
https://www.iceinspace.com.au/forum/...1&d=1741953687
Here's the case with the insulation in it
https://www.iceinspace.com.au/forum/...1&d=1741953687
With the 585MC and peltier cooler on top
https://www.iceinspace.com.au/forum/...1&d=1741953687
When it's all closed up
https://www.iceinspace.com.au/forum/...1&d=1741953687
I just need to tidy up the cables as I was still testing when I took the photo. There is some condensation happening on the exposed parts (black ring at the front and around the USB connector), but I opened it after about 1h of cooling and there was no sign of moisture inside. I'll check again later after having used it all night.
The components, apart from needing a 3D printer, are a 12V, 4A (48W) peltier cooler, M3 screws, M3 inserts, 5mm insulation tape and a computer CPU fan and heatsink.