Thread: Green Hone ID - meta question

You are right, they are informative

Originally Posted by Piet

Finally some pics

From the first 2 pics I would expect it to be a Charnley Forest.

I've done some reading, and it appears that Charnley Forest's are very hard, and tedious to flatten.

This stone was really soft, like roofing slate.

edit; I've got back home and checked out the stone; apart from 2 sizes of circular sawing marks around the perimeter, I can see no geological structure at all. This stone is very homogenous indeed.

BugBear

That is reason why I asked about additional signs e.g. smell.

How did you lap it?

Originally Posted by Piet

How did you lap it?

Initially dry on a 50 Grit SiC belt; I have now relapped it wet on a 8"x11" sheet of 120 SiC paper, supported on 6mm window glass. It's now smoother, flatter, but not really substantively changed.

I did some more test sharpenings last night. On an old plane blade (1900-ish) which is almost certainly W1 steel, around Rc58, swarf was generated very slowly. What was interesting was that if I dropped my hand, the stone gripped the softer backing steel (of the laminated blade) almost viciously.

The honing action is quite "grippy" on the hard lamination of the plane blade.

BugBear

Originally Posted by bugbear

Initially dry on a 50 Grit SiC belt

That is actually a very fast method which adrspach uses too and should only take a matter of minutes iirc. My method is subpar compared to that and it takes hours for me to lap a CF. I should probably cut up a belt too

Get a decent quality one and you will never look back. But be careful with softer hones as if you are too hard on it you can get oposite effect of dishing.

I've had reason to review this thread, and I don't think the stone is a Llyn Idwall either.

All the references say that the LI is very similar to the Charnley Forest (CF), but, if anything,
harder.

My stone is VERY soft indeed, and remains a mystery.

OK. I've been thinking. I'm not going to use this stone - it's too slow, and too soft.

I have other working stones.

But this stone does appear to be unusual, and I would be interested in identifying it.

I hate mysteries.

So - which member of this forum has the widest collection of other hones,
and the deepest knowledge?

I will DONATE this stone to that individual, and I will pay the postage. I do demand recompense though. I want a review of the stone in the context of the recipients other stones.

Who should I GIVE this stone to?

BugBear

I vote for MODINE

Im thinking its a thuringian. A pic of the side and back would help.