I have joined two same sized rounded rectangles creating 90 degrees. Then I made 45 degrees guide and copied figure so they both can be on the same guide.

enter image description here

Then using a blend tool I evenly distributed figures every 9mm.The result I copied and pasted every 24 mm. The result is on the Figure 2: enter image description here

Now I want to crop it and save as a pattern. But before that I did Object > Expand ang grouped it to prepare it for cropping. As on the previous stage it wouldn't crop at all. I'm not sure how to do it right so I created a square and placed it in the centre of the group.

enter image description here

After cropping I've got some weird lines on the shapes. Also my pattern does not tile smoothly. Here is the result: enter image description here

Why do I have these thin lines on rounded rectangles? And more importantly, how can I make this pattern tile smoothly?

EDIT: Well, at least one problem is solved. Turned off the Anti-aliased Artwork option and those lines dissapeared.

EDIT: I saved pattern from the Figure 2 as a Pattern and tried to tile it by playing with Pattern Options. Now it's much better, but still it doesn't look smooth. Do I need to change something? enter image description here

  • If you look at the square you've placed at the center of the group you should be able to see that it would not line up properly once tiled.
    – Hanna
    Commented Mar 26, 2015 at 19:37
  • @Johannes, I saw that. I don't know how to place it properly.
    – Peter
    Commented Mar 26, 2015 at 19:42
  • Start here: helpx.adobe.com/illustrator/using/create-edit-patterns.html You shouldn't need to "crop" anything.
    – Scott
    Commented Mar 26, 2015 at 20:19
  • @Scott, thank you, I read it and made my pattern different way. It looks better but still it does not tile smoothly. Am I on the right track? What do I need to change?
    – Peter
    Commented Mar 26, 2015 at 20:45
  • 1
    Unfortunately, I see this is exceptionally localized. Meaning an answer to help correct this pattern wouldn't really be that useful for anyone else, unless they were attempting the same pattern. You realize you could probably download a free pattern and change colors, right?
    – Scott
    Commented Mar 26, 2015 at 21:32

2 Answers 2


The base module:


The composition:


Finding the horizontal and vertical repetition:


The Pattern Frame:


The Module:

  • Expand the strokes
  • Select all and using the Shape Builder Tool and pressing Alt, delete every part of shape outside the frame


New Pattern:

The pattern is done, but the gradients from the sides shapes must be fixed


Fixing the gradients:

From the Pattern Editor and using the Gradient Annotator

fixing the gradients


pattern filling


I would like to contribute to another method:

1- Make just one module.

2- Rotate it to 45 degrees and drag it to Swathes panel.

3- Size the tile to the desired size and position.

4- Apply the pattern to the object.

5- Rotate just the pattern in -45 degrees.

See the image below for references.

enter image description here

  • Note: I am using the same dimension that @Danielillo used.
    – LeoNas
    Commented Jul 10, 2018 at 0:32

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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