It looks like I may have found an overlap between straight razors and fountain pens as well as another use for my hard Arkansas stones. I have seen some of these stones marketed as pen stones in the past. It seems that they were intended for periodically sharpening fountain pen nibs. Presumably this was required in a time before iridium tipping. The attached article details the process. I'm tempted to try this out on one of my bold writters. I may have found a use for my smaller Arkansas.