Hi all I bought a old oilstone at a car boot sale at the weekend. It only cost me a quid - I was mainly after it for the wooden (cedar?) case it came in. Upon examining it more closely I reckon the stone itself is of pretty good quality. I've been soaking it in strong detergent solution as mentioned in this forum, since I also have some waterstones and would likely use it with water/detergent instead of oil. It's starting to show its 'true' colour, a light sandy brown which (to me) looks not unlike the colour of the 'Norton India' stones I was trying to avoid spending 20+ quid on... ;-)
So anyway, partly because I may have got a real bargain, and partly because ... I'm just interested ... can anyone point me to information on how to identify the type of stone this is likely to be?
BTW it is one grade only (not a combination stone) and at a very quick guess I'd estimate it to be around 400 grade
Cheers Jon N