Cooling Fan: 30% power after 1.5mm have been printed.
You might want a piece of 6mm carbon tube to stiffen up the airframe, there's a slot to insert it, but at this size, it might not be required.
Total Printed weight I estimate to be ~360 grams, and total weight with all electronics and battery to be around 560 grams.
Today we made a flying model of the battle bus from fortnite! It ended up being more of a blimp rather than a hot air balloon but propane regulators at that size would be hard to find, nevermind...
