NOTE: this model has already an intern structure to have led. It's a tricky procedure, it's not impossible, but you need some know how with led, tin soldering, etc.
The Staff of Homa from the Genshin Impact game, it's already divided for printing. The flame are printable as a single piece or in tree pieces for more convenience with support.
It's already divided in two pieces for transport, with a thread in the middle. It require an alluminium tube for support, 12 mm in diameter for the shaft, 15 mm for the tip, so the two can connect and made the model more stable.You'll need to print the model with transparent red filament, and not paint the led area, for it to light in the right way.For the central pole you'll need a meter long transparent acrilic tube of 30 mm in diameter, fix the led to an internal aluminium tube (fix it with the tube support) and fix on it the led strip to illuminate the pole.
For every problem or question please message me in private.
Enjoy your print!