How to delete this in Illustrator?

[crizual]

Hello everyone I need some help in Illustrator. I want to delete the thing which goes beyond the layer rectangle, I want it only inside the rectangle.

How can I do this? Thank you.

[mwenz]

Using the pen tool, hit the plus key to the right of the backspace key (not the plus key on a num pad), add nodes to the blue curve where it crosses the green rectangle at the top and bottom.

Delete the nodes extending above and below the green rectangle by pressing the minus key (again, the minus key to the left of the backspace key, not the minus key on the numpad). This will leave you with just the nodes at the top and bottom of the green rectangle but there will likely be a curved segment above/below the green rectangle because these will still be smooth curve nodes.

Switch the the white pointer. Hold the alt key down and adjust the handles which will convert the nodes to corner nodes and allow you to adjust the curved portion at the same time.

Mike

[crizual]

Thank you mwenz, but there's a problem. I've maded this rectangle tool with arc effect now It's kinda hard to correct this look. Is there any other way to make arc effect? Thank you

[mwenz]

However you did it at the top, do it at the bottom...But not knowing exactly how it is constructed, in general try the Expand and/or the Expand Appearance command(s) from the Object menu.

Failing that working, if you upload your file, I can take a look. You may have to ZIP it in order to attach it.

[crizual]

Here's the test file attached. Please take a look. I know quite allot Photoshop, but I really sux at Illustrator. Hate everything in Illustrator, other shortcuts etc. Need to get used to it . Take a look, thank you for your help.

[mwenz]

You did get close.

Like I mentioned, select the curved part. then from the Object Menu, select Expand Appearance.

In the screen shot, I dragged two guides down to the top and bottom of the rectangle.

Select the white pointer (Direct Selection Tool). Zoom in close to one of the corners. Click once on the node you zoomed in on. Move the node onto the guide. Turning on Smart Guides might also help. Now notice that the top extended handle that controls the curve is above the line (if you are working on the top part first). Click on it still using the white pointer. Move the handle straight down onto the guide and it should lightly snap to it. Do the other corner. Move to the other end and do it as well.