Review on E3D All Metal HotEnd Full Add: Enhancing 3D Printing Performance with Premium Quality by Steve Guillen

Worth the money if you need high temperature printing. I bought it to print in nylon which works very well (although my bed adhesion sucks but that's not his fault) as well as a nice ABS print. I haven't tried it with anything else yet. I ended up printing a mount that allows 2 24V fans to provide adequate cooling. I really don't recommend using the fan mount that came with the kit and reusing your regular extruder fan as I've read that all metal hot ends need a lot of cooling and with two 40mm fans I've had no problems. I also reused the stock thermistor and heater as I didn't want to redo the wiring while it worked fine just tried up to 260 degrees.