how to tell what kind of sharpening stone i have

If I have a rock what characteristics or tests tin can I use to make up one's mind what kind of stone it is.

In that location are no real tests you can practise to determine the kind of stone, although y'all tin get a applied appreciation for how it works — fine cutting or not, produces a scratchy or shine or polished surface, how fast it cuts. Cutting speed is not always direct tied to how finely a rock cuts, although this may seem paradoxical the size and hardness of the abrasive particles can exist the same in 2 stones but their spacing and how strongly they're bound together can vary greatly, q.v. the fast cutting of Japanese waterstones compared to natural American or European stones of approximately the same grit.

Anyway, rock IDs are a really tricky area and information technology may require an experienced collector to definitively place a stone for you. But red stones aren't common and then just as a quick gauge it's just possible yous're seeing an oil-soaked India rock, which would have originally been an orangey colour. Indias were one of the commencement constructed hones, offered by Norton since the turn of the last century. They're made from aluminium oxide bound in a ceramic-like matrix.

If you lot want to get expert help in IDing your stones you tin can investigate this option by posting pictures on diverse knifemaking or directly-razor forums where members are usually very willing to help ID unknown stones for new members. Many take turned into stone collectors and have a vast knowledge of stones old and new.

You may demand to make clean the stone, as the current advent of many erstwhile stones may often, in fact, completely mask their true appearance. In extreme cases a rock that is nighttime grey, greenish or brownish turns out to be beige or about white after cleaning.

Here's roughly the same patch of ane of mine earlier and subsequently cleaning and lapping!

I am aware there are oil stones and waterstones. Are those the merely two actually. Likewise diamond (which is relatively easy to identify) those are the only ones I run across advertised.

Although many natural and synthetic Western stones are sold every bit oilstones notation that they don't have to exist used with oil.

Other than the fact that traditionally things other than oil were used for 'oilstones' nearly all can be used finer with h2o, a soapy mixture and sometimes even dry out*.

If you are using oils broadly speaking this isn't always but one liquid, it tin be anything from mineral oil at the viscous finish to something finer like a lite machine oil or honing oil (babe oil too if you don't listen the aroma!), it was and however is quite mutual to run across kerosene used, besides as that mineral spirits or WD-40 are ofttimes recommended.

Notation: in general the finer the stone the amend information technology responds to a lighter (less viscid) honing fluid, and so information technology's worth trying diverse things to find out what works best.

I recall reading about Arkansas stones but that might exist a brand name.

Arkansas stones should refer to a particular type of rock that actually does come from the country.

Unfortunately these days many kind-of-like Arkansas stones are sold under the proper noun considering it's a selling betoken. In that location are further designations of Arkansas stones into classes (e.thou. Soft Arkansas, Hard Arkansas, white translucent, black translucent) simply these too are abused to add value to stones that aren't what they look similar.

Ditto the above with Washita, Charnley Forest, coticule and Turkey stones.

Cleaning the stones
As mentioned higher up if yous post pictures of stones for an ID you may be asked to clean them first. Just yous should do this anyway, as old oil, dust, rust and metallic particles will be removed from the stone and it will cut the style it should. The difference in abrasiveness betwixt a gunked up old stone and one just cleaned tin be remarkable.

You lot tin clean stones in various ways, including at the very basic level just scrubbing down with soapy h2o and a scrub brush or nylon abrasive pad.

To get a stone actually make clean about of the fourth dimension you accept to resort to soaking. These days many will soak in Simple Green which I've not tried myself only plainly information technology works really well. It's more common to soak in a solvent of some kind, including mineral spirits simply traditionally kerosene or gasoline were usually used because they were cheap and plentiful.

In cases of farthermost oil buildup, especially when the oil is one-time and oxidised, caustic oven cleaners are sprayed on to suspension downward the oil. Every bit extreme as this sounds generally it does no harm to stones, whether natural or constructed and information technology is very effective.

If y'all want a stone really clean information technology may be necessary to clean it in stages. Yous soak and clean off the surface, then allow it sit for a while (usually weeks) giving time for more oil that soaked into the interior to leach out, which a further soaking can and so remove.

*If using a rock dry out it is vitally of import to clean the surface regularly (ideally each time) to prevent loading or glazing, where the pores fill with metal particles and the item to exist sharpened tin only skate over the surface.

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