Alcohol lamps are dirt cheap, i have made one using a salt shaker and some alufoil foil and some cotton rolled to a wick. It is worth it having one. 2$ shipped at aliexpress. Temp of buring alcohol is much lower than butane flame . Depending on flame size and distance you can vary between 400C-800C and also heat larger area than a torch flame . The flame temperature distribution at different heights of the alcohol burner. The abscissa denotes the vertical height relative to the flame nozzle and the ordinate denotes the corresponding temperature of the symmetrical core of the flame.