So, do you stipple over the existing molded checkering, or do you have to grind that down first? Thinking of working over my M3K like this. Of course I'll do dad's first, just in case.
If you want the best looks, sand off the original checkering.
If you don't care about looks and just want a nice rough texture, then stipple over the checkering.
I stippled over the texture in one spot and didnt like it so I melted the texturing down and stippled over it. Sanding would work too, I just wasnt dedicated enough to do it