I was following an online course to learn blender on Udemy. I was using array modifier to create an array of objects using array modifier. The relative offset is set to (0,0,1), and I was expecting objects to be right next to each other without any gaps. Whereas I get something like this: enter image description here

I could get rid of the gap by decreasing relative offset value along z. But I wanted to understand what's giving me this gap, while the online course used the same relative offset and had no gaps.

Details of a single object: it is made up of 4 cylinders with a non-default property "Nothing".

[Edited] Screenshot from the video that I am following: enter image description here You can see no gap between two objects. I see that we used same settings.

  • 1
    $\begingroup$ are you sure there's not a single vertex hanging on the bottom? $\endgroup$
    – moonboots
    May 6, 2020 at 7:05
  • $\begingroup$ No, I do not think so. These are just 4 cylinder objects. I tried making them from scratch, and still the same result. $\endgroup$
    – CODError
    May 6, 2020 at 20:56
  • $\begingroup$ is ther a stray vertex somwere? $\endgroup$
    – J.Doe
    May 6, 2020 at 20:58
  • $\begingroup$ Left side appears "taller" than right $\endgroup$
    – batFINGER
    May 6, 2020 at 21:39

2 Answers 2


Tick the Merge checkbox in the array modifier. It is most likely that your instructor too had used Merge option ticked

  • $\begingroup$ No, that's not the case. I just checked, and also attached a screenshot from the video. $\endgroup$
    – CODError
    May 6, 2020 at 20:55

Not symmetrical

If you look closely the left side of your scaffold is a wee bit higher than the right. This makes the z dimension a bit bigger both ways, hence the gap.

**enter image description here**

Example with two joined cubes, one slightly higher than the other. Make same and array will merge as expected.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.