Hi, In the past years I always have no problem buying O1 steel (at knifemaker.ca, in particular). Since a little while there is no more O1 on the market, as far as I know. I've looked at kbs tools, metalsupermarket (have some in drill rod but no flat material) njsb... no one seems to have some in stock. No information available to know if it will come back someday at this point. Does someone know what happened with O1 steel, if production has been stopped for some reason, or else ? If you have some input or answers, thank you for sharing.