I haven't played with fire in a while so last night was me having a play.
I got out my fire making stuff and had a go.
The fire piston is a PITA but fun
. It took several strikes to get the charred cloth to ignite but oh what satisfaction. I would not rely on this method unless your piston is solid. Mine is homemade and not all to reliable since the seal isn't tight.
Fat wood is great stuff. The "saw dust" looking stuff is fat wood dust. It was a bit dry so I used it more for an additive to my pine sap. Those two mixed together makes for an easy light with ferro rod.
Fat wood alone light pretty easy. Thinly shaved and sparked with my cheap ferro rod its lights up nice. Add in the dust or pine sap and no problem.
I dislike that Mora for fire making. I need to work on that knifes spine to be able to scrape better. I used my Waves saw back to strike the ferro and scrape the fat wood.
I usually have a ferro rod striker rather than use the back of knives. Simple hacksaw blade works fine.
The rock and broken file were supposed to be my "flint and steel". The rock sparks but just not enough to light charred cloth. The file was sanded to expose raw metal and produce a 90 degree edge.
When I'm out fat wood hunting I take the file to check rocks. That rock is sparking just not enough.