David Weaver
We are exactly where I am in my pencil making endeavor. Octagonal pencils with lead only in the business end.

No double iron planes at the time so an old European account specifies scraping the facets of the pencil with glass. No lead recipes yet as the text is still in the era of using cut graphite out of the mine.

I ordered a nice plain piping set to experiment with the lead soon, but I will be avoiding most of the refining process due to starting with micron sized graphite and clay already. The older recipes that I found online specify tumbling with rocks.