Revopoint turntable adapter with integral marker dots
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This is MYCNC3D's turntable plate with marker dots included in the model.
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MYCNC3D's turntable adapter sits on top of the portable turntable and increases its diameter from 125mm to just over 200mm. It's a well-made model that prints well, is sturdy in use, fits the turntable perfectly, and is compatible with all accessories for the dual-axis plate.
For many scans it's useful to have an irregular pattern of reflective marker dots on the plate, to help the scanner software keep track and tie all the frames together. My POP 4 came with plenty of self-adhesive marker dots, but I realised it would help if there was a suitable irregular marker layout to help with placing the markers. I copied the pattern from Revopoint's 4-part adapter plate.
I was going to simply place the self-adhesive markers in a similar pattern, but I went one step further and included the marker locations in my remixed model, as near as I can determine them from online images.
The Model
My remix includes three STLs:
The adapter plate with 10mm x 0.6mm recesses for the markers
The inner 6mm diameter 'reflective' dots
The outer 10mm black rings around the dots.
If you select all three STLs and add them to PrusaSlicer with multiple extruders defined, it will ask if you want to treat them as a single model with multiple parts. Answer yes and they'll all be placed in register.
The model is intended to be printed in 3 colours. The dots are 0.6mm thick, so with a 0.2mm layer height you will have 6 filament swaps, which is manageable in a 'manual MMU' setup but is easier with a genuine MMU (and hopefully even easier with INDX!). For the print in the photos I used silver/grey PLA for the plate, matte black PLA for the outer rings and silver silk PLA for the inner dots. I put the silver silk PLA in tool 1 so that there was no risk of colour contamination in the first layer.
The silver silk PLA isn't reflective like the genuine self-adhesive markers, but it's quite bright and has worked rather well in a couple of test scans with the POP 4. Here's a comparison of a couple of printed dots (scraped off the plate after an aborted print) next to a section of a sheet of the genuine markers.
Printing Options
The model also gives a number of other printing options:
Print just the plate, let the slicer bridge over the marker holes, then apply the self-adhesive markers in the recesses. They sit a fraction below the plate surface, but that's not a problem.
Print the inner dots in one colour and set the outer dots to the same tool as the main plate, to give just the 6mm inner dots.
Print the inner and outer dots with the same tool, to give 10mm inner+outer dots
You could even print all the STLs with the same tool, to give a plate without dots, but you might as well use MYCNC3D's original model if that's what you want.