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I have recently decided to delve back into 3D modeling, I am a hobbyist I guess you could say. I have been trying to find a solution for this particular problem for days now. I have scoured this as well as other forums and have yet to find an answer to this dilemma. This is my first post here so I hope I don't make too much of a fool of myself :P

I am currently trying to merge three rectangular cubes to form a symbol: enter image description here

The problem arises when I goto render the picture: enter image description here

I have tried Joining the objects then going back with the Knife and removing doubles, which seems to be the answer to this, but I keep getting the overlap.

I am sure it is a simple fix but I have probably burned myself out on finding it.

Thanks in advance for any help or advice.

If I have managed to miss another answer to this in my search could you please link it.

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You could do it with the TinyCAD addon or with some extrudes.

If you want to start with your 3 parallelepipeds you could use the TinyCAD addon:

  • Download and istall the addon.
  • Join your parallelepipeds with a ctrlJ, and go in Edit mode.
  • Select all and press W > TinyCAD > XALL.
  • Keep everything selected and press W > Remove Doubles.
  • Delete the inner vertices so that you won't have any inner edges in the final object.
  • Fill all the faces.

enter image description here

If you want to do it with some extrudes, you could:

  • Start with a plane, create an edge loop on its middle and tilt it with GG.
  • Bevel the middle edge loop with ctrlB and create 2 new edge loops.
  • Extrude the plane.
  • Select a face and press ctrlaltspacebar to create a new custom Transformation Orientation (named "Face.001" by default).
  • Keep this new orientation selected.
  • Select one of the faces you need to extrude, press E and Enter right away.
  • Move this new face along the Face.001 Y axis.
  • Same thing for the other face.

enter image description here

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  • $\begingroup$ Thank you very much for your help with this. After a bit of fumbling around with it I figured out I had to Join the parallelepipeds prior to switching to Edit Mode for the rest of the steps mentioned above. This was, I am sure, one of many hurdles in my self-assigned project and it is nice to have a place to go for advice. $\endgroup$ – Prometheus217 Jan 4 at 23:26
  • $\begingroup$ oh ok I thought you'd know you would have to join ;) $\endgroup$ – moonboots Jan 4 at 23:45
  • $\begingroup$ I am learning/relearning this world, again, after a few years. I am mainly doing it for fun but you never know where it can go. I am mainly using projects to learn more about the program. If there are any tutorials or informational material you would recommend that would be cool. I have googled about 100 tutorials and courses but just use them as needed. $\endgroup$ – Prometheus217 Jan 5 at 0:32
  • $\begingroup$ hard to say, at the beginning I followed a lot of random tutorials that seem interesting, then a thing that helps a lot is to have my own project, for example create a fake animation movie trailer, which forced me to solve the problems I came across, like make a character walk, a camera follow a path, etc... I think it's the best way to learn: cope with problems to solve ;) $\endgroup$ – moonboots Jan 5 at 9:47

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