Cleaning up messy corner lines?

Question

I'm kind of new to this stack exchange thing so please bear with me!

Anyway, I'm trying make a ribbon on Illustrator.

Upon making this ribbon from basic shapes and combining them with the Shape builder tool, I end up getting these really messy/jagged corners, and I have no idea what to do and how to fix it...

Any tips/advice/tricks on fixing this would be hugely appreciated! :)

(I'm alright with using Illustrator so feel free to throw complicated lingo at me!)

Also, just in case you wanted to the know the shapes that make up this ribbon...

Thanks again!

Answer 1

There is another solution: Change the stroke corners to rounded

Square:

Rounded:

Of course, that is assuming you are ok with actually having a rounded corner there as opposed to completely square.

Answer 2

Let's say you have these shapes:

Match the shapes as close as you can, Select them, then go to Object->Expand

Next, evoke Pathfinder and press Unite:

Now, you can adjust (remove and move) any anchor point to create perfect corners -

+ Anchor point remove tool (press "-")

Will give you this corner -

There are a lot of other ways to achieve this task.