White lines appearing

[aiturtle]

Hey guys.

Just wondering if anybody knows how to get rid of the white lines that appear when putting two objects side by side? I duplicated my clipping mask and am joining them together but not sure how to get rid of the thin white line (circled in green) that appears at the join. Also, when I export it to PDF, I am getting strange white lines appearing at the top that aren't there in illustrator. Anybody know why this is or how I can get rid of them?

I'm relatively new to illustrator, any help would be much appreciated.

[Ton Frederiks]

Are these images or vector objects?

If they are images, you may want to crop them and make them a single pixel smaller.

[aiturtle]

Hey there, thanks for the response. I believe they are vector objects, I bought the files off creative market but I'm able to adjust the colours and they have paths/anchor points so I'm assuming they must be vectors? Sorry my knowledge of illustrator is still pretty basic!

[c.pfaffenbichler]

Could you please post a screenshot in Outline View (cmd-Y)? 

»Also, when I export it to PDF, I am getting strange white lines appearing at the top that aren't there in illustrator.«

Which pdf? PDF-X/4? 

[aiturtle]

Hey there, thanks for the response. This is outline view, I'm not sure if its normal that it is completely black? I bought the file off creative market so I didn't create it myself. Your question about which PDF made me realize the file was opening up in pdf editor. When I opened it up in my web browser the white lines at the top disappeared but I'm still having the issue of the white lines appearing at each join/seam of where I have the clipping masks side by side.

[c.pfaffenbichler]

I don’t understand what exactly the screenshot shows in relation to the previous screenshot; could you please post screenshots with and without Outline View and at the same position?