Hi DD,
so simple....yet so effective

I would assume most cultures had their own way of maintaining their weapons......so it would seem for the sake of an authentic look....adopting these 'techniques' for a specific ethnographic blade would be the best solution.
It would be interesting to discover what methods were used by different groups. I know that sand mixed with animal fat is one method employed by nomadic arabic tribes. Formed into a 'paste' and rubbed onto the metal directly.
We all know the use of 'acidic' fruit juice to etch and clean blades in SEA. I wonder if some African tribes used this technique
Are there other maintanence techniques that are known to members..