I'm 82 yo. I bought one new 70 years ago. I used the h--- out of it. Gave it to my oldest, long gone. But, I found one on ebay. To quiet it, there's a nut on the bottom which controls the amount of magnetic movement. Try tightening or loosening it if it's too noisy. Shallow throat, but remove the arm and the spring, fasten a 2" x 2" to a stud, fasten the spring to the 2" x 2", and you have unlimited radius. Very useful, for certain operations, eg, very intricate cut, especially in plywood.