<p>I have built a 3D printer from salvaged/purchased parts. I am using an Arduino Uno and three easy driver stepper drivers with 3 CD-ROMs drives and a PC power unit. I ordered a 3D pen and have it mounted with a transistor to switch it on/off. Everything works but when I try to run code that I got from makercam.com it seems like it wants to fill in the shape rather than build up. </p>

<p>I followed this tutorial <a href="https://youtu.be/anIy6eb1fW0" rel="nofollow noreferrer">YouTube - How To Make A Cheap 3D Printer</a> and after modifying the G-code I am unable to get any successful prints.</p>

<p><a href="https://i.stack.imgur.com/LgHI1.jpg" rel="nofollow noreferrer" title="Bad prints"><img src="https://i.stack.imgur.com/LgHI1.jpg" alt="Bad prints" title="Bad prints"></a></p>

[{'answer_id': 4867, 'author': 'Airfield20', 'author_id': 4251, 'author_profile': 'https://3dprinting.stackexchange.com/users/4251', 'pm_score': 3, 'selected': True, 'text': '<p>Download an stl file from Thingiverse.com </p>\n\n<p>Put your .stl file in a slicer program like cura</p>\n\n<p>It will output gcode for 3d objects rather than 2d.</p>\n'}, {'answer_id': 4892, 'author': 'Jesse Williams', 'author_id': 3845, 'author_profile': 'https://3dprinting.stackexchange.com/users/3845', 'pm_score': 2, 'selected': False, 'text': "<p>I would typically shy away from downloading gcode and printing it directly.  Always slice it yourself since, inevitably, every printer is different.  What happens if the gcode is setup for ABS (higher temps) and you are printing with PLA?  If it's setup for a build platform larger than yours and you just hit endstops?</p>\n\n<p>Definitely go with Aaron's idea, download a model (Thingiverse is great, but there are SO many sites where you can get files), configure a slicer for your print settings (I prefer slic3r to Cura, but both are great), slice it and print away.</p>\n"}]
['https://3dprinting.stackexchange.com/questions/4809', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/8837/']