screen door repair patch

Kids kept making the screen door hole bigger because, why not? So I arrested it by making a patch for the hole before it got any bigger.

Circle diameter is about 70 mm. I used 4mm M3 bolts, and square nuts because I had spare ones of both. My previous rendition was a rectangle, which didn't do any protecting.

I know, I should've used black to match, but this was just a test. My real goal is to make a heart shape, or some other shape, without the need of these type of fasteners.

Printed at .2 mm height. no supports. PETG. All the fasteners took a little bit of force to get in but the sizes were perfect to hold them in.

Let me know if you guys can think of anything better.