I got the MetroX on KS and am enjoying finding out what it can do. I have a long history of scanner use w/ $30k scanners. So while I have high hopes for the MetroX, I realize it’s not a $30k device.
I just received my large turntable and proceeded to dot it up. But when I ran it, the MetroX doesn’t seem to be picking up the Ø3mm dots. The Ø6mm are fine.
Thought I’d read where the MX had Ø3mm capability??? Any insight on this would be most helpful.
I believe I saw someone say that they could use one at a time, but both don’t work simultaneously. I believe there is a setting for marker size, but I haven’t run into it yet. I should probably look into it as I would like to use them on small items.
I do know that some types don’t work. I think it’s just the cheaper paper type. You need the ones that are reflective.
the ones I have are reflective, they glow in preview window. I have not see a setting like that either.
the setting was for removing markers from your scan, not what size it picks up
I tried some reflective 3mm and the MetroX picked them up. Remember, it is picky about distance. If you are not in range, it won’t see them.
The dots are random aliexpress magnets with the dots on one side. Only small ones I have at the moment. I did not need to change any settings. Can’t say what’s different with yours.
Any Revopoint scanner accept 3 and 6 mm inner diameter as markers , just remember that placing markers closer than 3 cm from each other can create conflicts and can jump while scanning , keep proper distance for each scanner
MetroX starts with 3 cm distance between markets no matter the size , 3 or 6 mm
I was playing with the distance between marker dots and at ~17mm one marker stopped being recognized. Three cm is probably a good rule of thumb. What’s the deal with printable markers, though? Even the ones in the Revo metrology kit are a lot closer together than 3cm.
I just telling you what the dev team told me , how smaller the FOV how smaller the distance of the markets have to be , the market may be visible at that distance but later while scanning they may show on and off and sometimes if too close causing issues .
The size of 3 or 6 mm of the markers is seeing by the software the same way .
I saw many users putting them too close and later have issues while scanning , remember the pattern need to be unique and not the same, not in a row either .
I don’t know what to say, my MetroX is very clearly NOT seeing Ø3mm markers. 
I’ve tried adjusting the depth, bringing the scanner closer and further away. Angled it. Checked the calibration.
Doesn’t see Ø3mm markers.
I use 3 mm markers all the time .
Make sure they are reflective and not simply laser printed on paper.
The angle also need to be proper while scanning usually 45 degrees max in position to the markers
Just start full Field and move your scanner above the markers at excellent distance , if not recognizing , recalibrate the scanner and try again .
I just did some quick testing. My MetroX can see 3mm markers just fine in parallel and crossed line laser modes, but in full field it does not see them. I did not try auto turntable. They do show up as 6mm sized markers.
Interestingly, I have some off brand marker dots that are 6mm, but slightly less reflective than the Revopoint ones. They are still reflective, but when I test with a flashlight held close to my eye they reflect only about 50-70% as much. When I try to scan them with either of the laser modes the MetroX does not pick them up at all, but when I scan them in full field marker mode it sees them just fine. Unfortunately I tested first with full field mode and used them on a bunch of 3D printed magnetic marker bases. Hopefully the software/firmware gets updated so that all modes can recognize them.
They will always show up as 6mm even if you use 3mm the software showing one size regardless.
The software can only recognize the highly reflective one to avoid holes on the objects to be seeing as markers .
If you still not see them in full Field and Auto mode check the calibration since your RGB may be not aligned right and if is not , it will not see well any markers .