RepRap ------ The Replicating Rapid Prototyper Project These are the files for the electronics for the RepRap polymer extruder head. Version 2. 2 November 2005 http://reprap.org Files called extruder.* and eagle.* are for the Eagle PCB program (http://www.cadsoft.de/). Start by loading extruder.sch into Eagle. Files called thermistor-charactristics.* are the spreadsheet for working out the characteristics of different thermistors for the design, .xsc for OpenOffice (http://www.openoffice.org/) and .xls for Excel (http://office.microsoft.com/en-us/default.aspx).