What's k390

[Wanimator]

I would whole heartedly welcome a K390 stretch given it wouldn't have a micro chipping or chipping issue.

[Doc Dan]

Vaseline is safe to consume if you use it in small amounts on a knife blade. Ballistol is not recommended for consumption, so if you use your knife around food, I suggest Vaseline as it is simply mineral oil with paraffin that helps it stay on the blade.

Thanks, yeah I'm aware of these issues. I am not sure at this point if it will be used for food after all. If so, I'll try to find some mineral oil instead

Petroleum Jelly is better as it is mineral oil that stays on the blade.