I've been using these for a few years now. I lost my first one and missed it so much I got another one - can't say more than what I think of it. I have used it for various purposes. One use is to clean up my 3D prints. Although it's sharp, I took my time with my Japanese water stones to give it some sharp edges on one end and use that end for that purpose. I use the other end to deburr the finished metal. I've mainly used it on softer metals like aluminium, brass and copper for which it has worked well. I can't judge how it behaves in relation to steel. The blade is made of tool steel and is therefore suitable for non-hardened metals.
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