In my never-ending quest for experimentation & to be my own MaCGyver, I've been playing around with chalking what was essentially my practice strop. Problem is, school chalk just gets dusted off after a few passes, and welder's chalk (soapstone) doesn't really rub off onto the strop.

My first thought was to powder/grind (got a mortar and pestle unused... ) one or both of the chalks so that I could make my own paste or whatever. Trying to approach the idea from all angles, I considered what possible ramifications this might have on the strop itself. The strop is a cheap Pakistani made thing, with a smooth(ish) side, and a fuzzy/suede/felt (whatever you'd call it) side. They are (I think) glued together.

What liquid shoukd I use as a suspension medium? IIRC, it is considered a bad thing to get leather wet (water)... Mineral oil? Or would water be okay? Something else that I haven't considered?

Please chime in with your suggestions on how I might proceed with my latest hair-brained idea! Well, unless your solution is: "just buy some crox spray!"...

P.S. I tried digging through old threads/The Library, but could not find an answer to my question. Hence the new thread.