Mostly what xdeus said: soak and rub the skin off the tail, any wood that isn't soft and porous is ok, and as long as the screen is between them it should be alright as most tank screens are made to withstand and not really absorb the heat from lamps.
Also, FYI: snakes aren't 'stupid' about heat sources and burns... they just can't really feel the temperatures on their skin. They don't move because they are trying to thermoregulate and can't tell that the surface they're lying on is burning them.