cwmorris
I have had similar problems with art students at university filling the drains with plaster of paris. one way to remove the candle wax or plaster is to remove the pipework and replace it. Alternatively you may be able to remove the candle wax from the pipe – if it is close enough to see – by mechanical means and flush it away – NOT WITH HOT WATER as this just pushes the problem out of reach down the drain. i.e Drill it up or cut it up (hand or mechanically powered drainrods) Good luck
