This is an accessory for the Huge Moon Rocket scaled at 1500%. 

The idea is to have a GU4 light bulb shooting down to the transparent flame. As even a LED bulb can build-up heat in the PLA, there is a small fan for air circulation.

You'll need several additional parts:

• M3 screws
• GU4 bulb holder
• a 30mm 12v fan (with possible resistors to slow it down)
• a GU4 light bulb plus its 12v power supply