One question to you. Have you ever been cutting and wished you could turn the speed down because you couldn’t stay on the line? That’s when you would turn the speed down, to have better control of the cut. As a scroll saw instructor, I teach beginners to start at 50%. If you feel you are cutting to slow, turn it up a little till it’s comfortable. If you are cutting and you feel you can’t control the cut, slow it down till it’s comfortable. Seeing as you are used cutting at full speed, you may never need to slow it down. My feeling is you will use the speed control more than you think!