We recently had a customer request to develop an Xcalibur extruder capable of extruding at 750°C, There are a number of options regarding high-temperature heater bands, but we decided in this instance to use coil heaters. After a bit of code tweaking, we hit the target – here is a video of the first run.
While we publicize that the Xcalibur can run reliably at up to 600°C, we love to experiment and in this instance we were able to adjust a few things and reach this soaring temperature, unheard of for a desktop single screw extruder!
http://www.noztek.com/product/noztekxcalibur/