tell ya what my friend,I was a board certified clinical perfusionist for 43 years,I know more about Human Pysiology than most M.D.s,Mineral oil is non-toxic, Go Drink some linseed oil and see how that works:)
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Come on guys, firstly you are way :OT
The question was about Straight Razor Scales, last I checked they ain't Cutting Boards and you ain't cutting your food with your Dovo :gaah:
Take it to PM's already
I have used vegetable oil for cutting boards since the '70's. It is meant to be consumed. As for the real topic at hand I use tung oil for wooden scales.
I use linseed oil on everything wooden: antique furniture, gunstocks, my camper interior. Love the smell. The boiled stuff polymerizes a little faster than the raw stuff, but sometimes also has additives that knock it off the food-grade perch. I don't know of any successful synthetic replacement. The low-scent mineral spirits might be new since 40 years ago, though.
I put RenWax on all my blades because it makes them rinse clean easier. I put it on some wooden scales I had impregnated with candle wax and it didn't shine them up at all.
Musical instruments of ebony are oiled periodically. It's a very thin, penetrating oil, I'm not sure what it is. But since nobody tries to suck food through their clarinet, it's not necessarily nontoxic.
Thirty years and countless butcher shops and everyone of them used peanut oil on the blocks,a little waterproof and dries reasonably hard and is food safe and doesn't go tacky like some other food oils,as for linseed or mineral oil on cutting boards etc you leave no residue so toxicity is not an issue,for knives and scales i've been using leather waterproofing oil lately and it's been good,doesn't darken much and completely penetrates with no surface saturation so handles are dry and waterproof but time will tell how good it really is,as for rifle stocks the recent u beaut oil is true oil made by birchwood casey but haven't tried it yet