To add to the above. Following this failure which was on a circular part about 80mm diameter, I ran a small part which worked perfectly. Is it to do with the heating of the platform only being in the middle?

I had the maintenance box/screen open and was watching the temperature. The nozzle temp gradually fell to 91%, then it stopped saying nozzle temp too low. I couldn't see a way of heating it more?

On a quite large part, the UP now stops after creating the raft and bottom row of the print, saying that nozzle temperature is too low, but I have no independent way of making it heat the nozzle. I have tried it with the cooling fan flap open and closed. When closed, the part curls up off the bed i....