Thread: What hone is this?

Couple questions about a hone I have. It was my grandfathers then my fathers. Different grit on each side coarse/fine. They used it with oil for knives and such. The fine side has a bad concave to it so I'd like to lap it (if possible).

1. What is it?
2. Is it worth lapping?
3. Will lapping it with a norton 320 render the 320 useless since the hone has been used with oil primarily?

Thanks!

Some generic carborundum hone, good for axes and knives.
I wouldn't use the Norton for lapping, some of those hones are quite hard, diamond plate with running water would be my choice.

Thanks Lemur! That's kinda what I was thinking too since neither of them used straights and my grandfather was a carpenter. Makes sense.

Since the cupping is so bad and I don't have a dmt, I'll probably just keep it around for display and memories.

Thanks!

Man! You could clean that thing up with some wetordry and WD40 and spray it off good with the WD40 and allow to dry a bit. Oil it up! Hone some knives. You don't really need flat for that!
I figure they would like that, anyway. The old stone being used. You won't wear it out!
I promise!

Originally Posted by sharptonn

Man! You could clean that thing up with some wetordry and WD40 and spray it off good with the WD40 and allow to dry a bit. Oil it up! Hone some knives. You don't really need flat for that!
I figure they would like that, anyway. The old stone being used. You won't wear it out!
I promise!

Im with Tom on this one, this kind of stone got many uses around the house, knifes, tools, etc, clean it up and use it!

Ok you talked me into it lol. I'll clean them up and use them for making things sharp like it always has.

Thanks guys!

The side shot seems to indicate a Carborundum, as stated by the guys. I would not let my DMT anywhere around it. It's tougher than it looks, even for your diamond DMT.

The surface looks & is, a bit deceiving due to the fact, that it is impregnated by years of oiling & metal swarf loading the grit during use & it came from the factory impregnated with a certain amount of lubricant.

New life can be given to it, by cleaning it & spraying some WD-40 on it as Tom said.

Take a screw driver shaft & rub it length wise along the edge; if it does not show signs of "crumbling", then you can spray EZ-Off Heavy Duty all over it & let it sit for 20 minutes, rinse off under running water using a stiff tooth brush & lemon detergent or Simple Green. The EZ-Off will "pull" a lot of the nasty that has loaded in the grit , right out. If the stone showed no signs of "crumbling" with the shaft on the edge, then the EZ-Off will not effect the bonding.
Finish the stone with a soaking of WD-40 or that Smith's Honing Solution.
I've used this process on many Carborundums with great results.

I vaguely remember somthing about cleaning oil from hones like this, it started with water and some detergent...
Boiling water and detergent, pressure boiler... kerosine, petrol, acetone... acetone in a pressure boiler... and then I didn't hear anything more from him!

He blew himself up !

Seriously, some like to heat it out, boil it out,,, I guess it all comes down to what method a person has experience with.

I watched my grandfather clean his, almost daily in a bucket, with a rag & a some gasoline.