Thermistor not going anywhere, continuous strip of Kapton running twice round the hot end. This is how my J-head was taped up, I printed at mostly 245C and it never once extruded itself.
I’m rebuilding my i2 with new electronics and an E3D hot end, slightly disappointed that their instructions have a flimsy bit of Kapton holding the thermistor in, at least there’s nothing to melt. 
That looks very tidy, I think I’ll try that myself, how did you make the hole for the heater? Just poke it with something sharp?
@Liam_Jackson Wrap the tape round the thermistor (I had to pre-cut my tape to the right width), then use an exacto blade to cut the holes for the heater.
@Bracken_Dawson need to get one of those knives, sounds useful!
Has anyone had any issues with Kapton tape when extruding above 260deg C? That is the specified upper thermal limit.
I have wondered if it would be better to wrap the heater block with insulation then tape.
@Liam_Jackson Any sharp knife will do, I just used exacto as an ideal example, I actually used a Victorinox pen knife.
Nice clean work @Bracken_Dawson
@Marc_Pearson Yes. 
