Piano wire of the right gague is both stiff and flexible - some hardware and all model shops.
Peccavi
February 2010
blow down the blocked tube.bike pump and some blue tac to make a seal sometimes works.sometimes you need to find where the tube goes (usually on to the compressor drip tray) and blow from there.put a cloth over hole to stop gunk going in to the fridge when you blow
Tim
February 2010
Telephone flex (cable) works well, you can also tie a piece of cloth to the end of the cable and pull it through