How do I change the "Create Trim Marks" tool to automatically make the line 1/4" and not 1/2"

[Kurdtlhorg]

How do I change the "Create Trim Marks" tool to automatically make the line 1/4" and not 1/2"?

I'm looking for a way to keep it automated and not have to go in and manually change them for each file.

[creative explorer]

@Kurdtlhorg Unfortunately, you cannot permanently change the default line length for the "Create Trim Marks" tool in Adobe Illustrator. The default length of $1/2$ inch (12.7 mm) is a fixed setting within the software. BUT, you can edit them with a work-around! 

If it is a one-off, you can do it, but if you plan on doing this all the time, you may want to create an action for it. For the one-off, select the object you want to add trim marks to and go to Object > Create Trim Marks.

Now that they are editable, you can use the Direct Selection Tool (A) to grab the individual endpoints of the lines and drag them to shorten or lengthen them.

[Kurt Gold]

Hi Creative Explorer,

how would you set up the action you suggested to get custom sized trim marks?

[CarlosCanto · Accepted solution]

make your own!! with a Pattern Brush corner tile

It's a workaround so don't expect using this method to be easier than using the native Crop Marks