POSCA Paint Pen, PC-1MR Ultra-Fine Tip, Orange

I bought these markers as I am doing one of those painted rock projects for our property. Posca seemed to be the preferred option of many of not most so I went ahead and ordered these plus the metallics and the glitters. I have used them over an acrylic base and they set well. I usually do two coats because I am impatient waiting for the paint to dry, lolz. I also think they would perform better on nice smooth river rocks as the ones I have plucked from the earth are a jagged and too rough. It's a learning curve.