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Boiling water is fine.

The reason to keep the blade cooler when working is because the edge is very thin. If you work near the edge and the blade is too hot to hold then the edge can be much...

Just one addition to the buffing. If you are using a dremel and go at too high a speed then you can ruin the edge by overheating it. This is quite easy to do even if you are only buffing it.

I...