Marker Adapter for Vevor Plotter Cutter

I use my Vevor vinyl cutter / plotter to make large-scale pdf drawings on paper. I wanted to be able to use a slim felt-tipped fine-point marker as the "pen tool" option for the plotter. I couldn't find anything that would allow me to use my own markers, so here it is!
The diameter of the felt-tipped markers I purchased is 8.15mm. The clamping hole in the plotter is approximately 16mm.
One 3mm screw can be used in the threaded hole to secure the marker.
Only very slight cleanup was necessary on the parts after printing.
I also print with a skirt on the bed, at 0.35mm away from the part, 1 or 2 layers high, and 10 to 20 outlines. The skirt will very lightly attach to the part at that distance.