To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
A compressor is always useful
The compressor unit may not be as essential in a home workshop or a car enthusiast’s garage as an electric drill or a vise. However, when such a unit is available, it greatly simplifies...
“THE CREW” FOR TWO
The birth of twins is a joyful event, to be sure. Over time, however, it is complicated by some problems. For example, the kids grew up — they need a double stroller. And shape. In the...