That's the way I do it sometimes. I get the bevels started with the bubble jig. Once I've established the angle I can free hand it, as long as I'm very careful that is.It did to a point. I used it to start with, but found I was focusing more on the bubble and wasn't keeping the bevel flat on the platen. So after a bit, I took the jig off and just did it free hand. I focused heavily on locking my elbows and moving my body. Plus, I went really ssllooww and took my time.