extruder

Hi, everyone, currently I am studying mechatronics engineering. In this project am trying to upgrade my old RepRap Mendel. My goal for this project is a minimum price, upgrade weak structure and able to print well ABS. For now all the design I used 123D Desing which is free and I have uploaded whatever I finish project folder so u may download and change according to what ur design . And yes I am stay learning the process, so I am very happy to see your command, feedback, recommend anything. Thank you cheers!

(25, may)
For this week I was busying with my school assignment, essay. but I did add the part feed tube(PTFE) for feeding system. the fast design is the filament directly goes into the extruder which is the normally what we seeing. what I trying to do it inset of let filament to directly go into the extruder gear.I did let them bypass the feed tube. Which is will improve the feeding system pulling when the axes are moving. Upcoming is on the other side of feed tube I will tr