I have used PLA with following settings:
Flame:
Layer height 0.06 mm
Wall thickness 0.4 mm
Infill density 0%
General support no
Build plate adhesion type Brim
Print speed 40 mm/s
Wick:
Layer height 0.06 mm
Wall thickness 1.0 mm
Infill density 10%
General support no
Build plate adhesion type Brim
Print speed 40 mm/s
Candle:
Layer height 0.15 mm
Wall thickness 1.0 mm
Infill density 10%
General support no
Build plate adhesion type Brim
Print speed 40mm/s