Put the ice cubes, butter, flour and salt into the TM - Chop on speed 7 for 7 secs. Then mix on speed 5 (reverse) for 5 secs.
Knead for 3 mins on knead function, whilst adding the cold water- it will look like small beads.
Pour beads of dough on to the Thermomat and squash sides closed to make a dough. Put in the fridge for 30 mins.