Using the Project tool to add text to a curved object is a really cool use for the project feature. Here are a couple examples I did to show someone how it can be done in Shapr3D.
First I created the surface I wanted to put the letters on, in this case it is a resemblance of a ring. Once I did that I sketched the letters I wanted. Then I aligned the center of where I wanted the letters to go with the surface they will be on. Then I use the project tool to place them. Then I extruded them.
You can also cut the text into the ring. I’ve included a screenshot with an example.