As the name suggests, a ring stretcher is a tool that can stretch or shrink a ring.
Use the upper part for stretching.
![](https://www.mitubaci.co.jp/wp-content/uploads/2024/07/IMG_8719-2-683x1024.jpg)
It cannot be adjusted too drastically, but if you want to make it just a little bit larger, use this.
Use the lower part for shrinking.
![](https://www.mitubaci.co.jp/wp-content/uploads/2024/07/IMG_8718-2-683x1024.jpg)
The true circle is mortised. It is also used when squeezing a ring into a perfect circle before welding, which is in the shape of a droplet, when making a ring.
![](https://www.mitubaci.co.jp/wp-content/uploads/2024/07/IMG_5208-768x1024.jpg)
It is a heavy tool, so please be careful!
Talk about tools used for ring stretcher and engraving