Graphite (even just shaded on from a pencil) works quite well for wood. I prefer the stuff you can get in a powder.

Freaky ghost bed.

Your neighbors probably: today is a good day to die.

I’ve definitely heard of people using it. Although I’ve also heard an oil with a higher smoke point may be better.

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Everyone knows you must sharpen them with real stones from the home planet, lubricated with the blood of your enemies.