I love these things sealant spreaders. They are fast to print and make great lines.

They are insanely small to hold onto... very hard to get off a flat surface and always sliding into places that make them hard to find.

I have been considering making a tool handle for them to clip into but I started with a storage ring.

If you want to change this ring have at it... I used a program I wrote and is posted previously at
https://www.thingiverse.com/thing:4854174

This ring settings are ROUND, 1.8mm thick and 25mm in diameter.

First time I have printed on this small. I looks like we could go to maybe 2.0. Too large and the spreaders won't float freely.

Prusa

I3 MK3S

No

No

90

Printed fine in PETG on my textured sheet no support and no brim. If you have issues with sticking the brim's are easy to remove and don't affect performance. These print great in PLA too.