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Need advice on how to make a 3D printer and how to control motors Answered

I would like to make a 3D printer this summer but I have no idea where to begin. I know the basic parts that are required like motors, a motor controller, an extruder, etc... I would like to make a very large printer --- something that prints either a 8x8x8 or a 10x10x10 inch items. I have a very very very tight budget (somewhere around $50) but the good news is that I already own some items that might be able to help. I have an arduino, some batteries, a raspberry pi, some servos, some pvc pipes (with joints), and some pieces of wood. My 64 dollar question is that will windshield wiper motors work? I know that most people use stepper motors but is it possible to obtain the same amount of control on a wiper motor? If you have ever built a 3D printer or know where to find parts for cheap or just have some tips on how to best build it, please let me know. Any help is appreciated.

p.s. If it is possible, I would like to have more than 3 axis of movement. 

Thank You 


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