Picture of Makerbot MK6+ heater replacement
this is a easy heater core  that will get you up and operational from readily available materials for under $1US per core. 

Step 1: Tools and consumables

Picture of tools and consumables
hookup wire 
30-31gauge coated nicrome wire 
kapton tape 
soldder preferably high temp 
1/4" OD copper tube 
furnace cement 


tooth pick 

AgeingHippy4 years ago
Hey Dude

Why not simply use a Vitreous Enamel power resistor such as this one



It is commonly used in the Reprap heater block design pioneered by Nophead.

Much cleaner and you don't need the cement, nichrome wire etc.
max mulholland (author)  AgeingHippy3 years ago
I would have but the time did not allow for shipping. I bought one of the first MK6+ upgrade kits and the heater core broke in the first 15 seconds and I needed the printer the next day for a presentation so I made one with what I had.