![I bought a new Naniwa super stone set 220-12000 from sharpeningstones.de but they have this lines after first use. Is it normal? I need to flatten them? : r/sharpening I bought a new Naniwa super stone set 220-12000 from sharpeningstones.de but they have this lines after first use. Is it normal? I need to flatten them? : r/sharpening](https://preview.redd.it/r6mi2vn1cr481.jpg?width=640&crop=smart&auto=webp&s=70b9390ac63e32859dd786a8ff3e19774042c12f)
I bought a new Naniwa super stone set 220-12000 from sharpeningstones.de but they have this lines after first use. Is it normal? I need to flatten them? : r/sharpening
Naniwa Aotoishi sharpening stone grain 2000, IR0260 | Advantageously shopping at Knivesandtools.co.uk
Naniwa Super Stone sharpening stone, S1-410, grain 1000 | Advantageously shopping at Knivesandtools.co.uk
![Naniwa - Japanese Sharpening Stone - #1000 / #3000 - for Japanese Knife : Amazon.co.uk: Home & Kitchen Naniwa - Japanese Sharpening Stone - #1000 / #3000 - for Japanese Knife : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/51H9o64ugsL._AC_SX355_.jpg)