Well the printer screen failed so my 11hour track print failed at some point last night. Fortunately I have spares and, despite never having done it before it took less than 10mins thanks to a nice simple design.
Sadly it also put a hole in the tank... Which is a fairly routine problem and I've got spares for that too but it takes half an hour to fix. Plus I can't do it while working or babysitting so it'll have to wait until lunch or later....
