https://www.youtube.com/watch?v=JDYsk1KQaHk 3d printer music :)
https://www.thingiverse.com/thing:447903 mounting bracket from here.
https://www.thingiverse.com/thing:3021660 optical filament sensor
bolt in replacement hotend was from ebay. description. though it only likes to be put in and taken out from the right hand side of the carridge. fan was tied in with existing fan seems to run both ok underpowered. also i had to cut a notch on oneside for the first fin flush with the stock alu throat or it hits on the filament wheel when inserting/removing.
Universal Hotend 3D Printer w/MK10 nozzle f/MK8 MK9 extruder most Extruders
had to use other thermistor settings repetier thermistor table 5 and 50 both worked for turning off the fan while when cooled, i print PLA at 1.4 x 160= 224 on the value chart which is about 140 deg C hopefully i can get that lower yet to reduce the smell.
NTC 3950 Thermistor
also goto menu -> settings -> bed coating and set the custom height to 22.50 , press < then save eeprom(wait 5-10 seconds before reboot printer so it saves to sd card). should be in the ballpark when you calibrate z , turn motors off and mobe the head around to see if it clears the platform.
its offset to the right so the ring wont hit the heatbed sand smooth so it does not catch.
CAUTION : this hotend has PTFE tube inside which decompose or can melt causing neurotoxins around 260deg C really nasty stuff, always be careful to save yourself trip to the hospital or worse your lungs.