I have been trying to scan a difficult object where I need to get the scanner down very low to scan the underside faces. The scanner then warns me, “Not Enough Markers” I cant really use scan towers as they sometimes get in the way.
I designed and 3D printed a marker ring that slips over the existing turntable to add extra markers at low angles…..
If anything I should probably add more markers, but it actually works very well already.
You are right, as I rotate the scanner (Metro Y Pro) lower and lower, I lose sight of the markers on top of the turn table so the scanner is mainly seeing the markers on the ring.
I might make a new “deeper” version so I can add more markers.