We would like to talk about a few points as a methodology chapter and these points are: 1- talking in general about 3D printing head Extruders and talking specific about a head Extruder thats will be in the link below https://www.amazon.com/J-head-Filament-Extruder-3D-Printer/dp/B010MSTVZO/ref=pd_sim_328_5?_encoding=UTF8&psc=1&refRID=2YGB7CA2JKTRVPD1PAFX 2- talking in general about solidworks program and talking specific about a design picture that will be attached 3- i would like to talk in general about Mach3 program and talking specific about Mach3 program in 3d printing and paraphrase a few pictures attached about Mach3 program 4- talking about materials could be used in 3D printing industry whether it is to print with or use it tp build the machine with and talking specific about blue tape painting material