The plastruder is possibly the most important part of the MakerBot.
This had the most pieces, the longest instruction and the most images (and it would benefit the wiki if some of the texts moved closer to the images) – but enough on that.
Hint: Twist the wires from the thermistor before cutting them to length.
Having put the barrel back together. Hint for others, put the nut next to the PTFE heater barrier. Remove the barrier, secure the nut and then put on the Nichrome wire, it is a lot easier than the method suggested in the wiki (putting on nichrome, insulators and removing the PTFE barrier and putting in the big washer).
Only remains to run the wires and hook them up