9/14/2023 0 Comments Dark blue patina truck![]() ![]() I have even left the blade unwashed for hours after cutting onions and there only seemed to be a slight darkening, but absolutely no rust. None of the colour has come off, and there are no taste alterations. No problems going through both veg and meat. The patina is stable, prevents rusting really well, and has not changed after I cooked a few meals. This is just a problem with the image, in real life the patina is smooth to the touch and there is no sort of 3Dness to it, but it does look splotchy in many places. The picture I have uploaded seems to suggest that the patina is rough and even causing pitting. It seemed closer to the picture in the troubleshooting section. It is less to the green side and more blue IRL.However, patination was uneven, and nothing like the smooth first picture on the wiki. It is actually very beautiful, much more so than the poor image quality is able to show. The final product was indeed a brilliant blue, close to turquoise. I immersed it into corn syrup so as to not waste a watermelon, and then washed and wiped the blade down. Instead of the 5 hours of immersion suggested on the wiki, I found that the knife began taking on a patina at around 25 minutes. Suspending the knife in such a small quantity of patina solution was difficult, and I ended up twisting some metal hangers to help suspend the knife. I added all the required reagents to the ~60mL of nekonoshoben collected, being careful to scale down the volumes. At this point all patina was gone from the blade and there should have been no organic compounds left on the surface. ![]() Lacking phosphoric acid, I cleaned the blade using sandpaper, vinegar, soap, then 96% ethanol, and finally anhydrous acetone. I figured that some of the old solution had been sitting for 3 weeks already and so had no need to process further. I added a spoon of soil as detailed in the wiki procedure, and then let sit for 2 days. Even squeezing the litter, it took me about 3+ weeks to obtain the amount shown in the imgur album. The greatest challenge was obtaining sufficient cat urine. With all that out of the way, we can get onto the modified procedure that I used, to moderate effect. Patination was not even, as seen in the pictures.This might not work for all types of litter, but mine was a plant based litter which expanded when wet. In the end, I had manually squeeze urine out of the used litter (wearing gloves of course). I attempted to train Fluffy to urinate into a cup by removing the litter, but was not very successful. Cats do not like to urinate into cups as I found out the hard way.It was simply not feasible to collect this volume from my single cat Fluffy. 400mL of cat urine was an extremely large volume, like who can get that much.I was not able to follow the procedure outlined in the wiki exactly. how can the solution produce a blue colour? Somehow it seems to work just fine, and here was what I did. The urine was collected from shop cats and processed to form a solution which would impart a blue patina to the blade.Īt first I was a bit hesitant, as it involved urine, but I was bored during quarantine, and to be honest, how bad can it be? I was also slightly confused by the procedure, e.g. It supposedly translates roughly into "cat urine", which is the patina medium (hence it's japanese name). Nekonoshoben is apparently a traditional patination technique used to passivate finished knives. The knife used was a random carbon steel mini santoku with glestain style dimples. ![]() This was slightly disappointing, but regardless, I decided to give it a go and test it for you guys. However, none of the people who I asked had actually performed the procedure themselves. From what I gather, this was put together by someone who had done some research and attempted it. So I ended up messaging a few people, and was pointed in the direction of the wiki. It can get a bit frustrating, especially if you're just trying to learn something from more experienced members. Often, people in the comment section give vague descriptions or cryptic replies, almost like they're trying to hint at some information that only they possess. These include- Want to know how to force a bright blue patina?- Traditional/Secret technique!!!- Nekonoshoben? If you've been on this subreddit for a while now you may have seen certain recurring comments, especially on patina related posts. "NekoNoShoben" patina technique ( Image Album) ![]()
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