Triangle Marker Trackers by xile6
I use these marker trackers for 3d scanning.
Simply print as loaded.
Bottom color in a color your scanner can easily see.
Then the top black so it does not get added to your model while scanning.
The Bambu file pre-colored.
Other printers. Simple pause at height right after the circle is finished and swap filaments.
Then add your marker dots.
There is two models. Standard and Magnet.
The magnet ones fit a 6mm x 2mm magnet. It will need to be glued in place. The holes are sied 6.2mmx2.2mm