How to print multiple artboards on one page each with individual trim marks in Illustrator?

Question

I've tried putting everything in one large artboard and printing that large artboard, but it would not show the trim marks for the smaller artboards.

Answer 1

To place trim marks around artboards

Select File → Save As (Ctrl+Shift+S) and select PDF

Once the PDF options come up, click on Marks and Bleeds and check Trim Marks

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To place crop marks around individual objects

Select all items you want and go to Effect → Crop Marks this will apply crop marks (trim marks) to each object.

See this answer for more.