Yup this issue you can see in my picture. I was hoping paint markers would have been viscous enough to not bleed but it did anyways. Not that big of a deal for a fire and forget box of whistles.

This is the one I used, it’s quickish and prints well at 18 at a time. Figured it would be comfortable to hold.

https://www.printables.com/model/1493196-nice-whistle-1

There’s a word I could have done without in my vocabulary.

Been printing them, just need some good locations to place my boxes