To hold the centerline on the workpiece will help the device shown in the figure.
Recommend to read
THE DRILL BECOMES A MACHINE
Offer for fans of DIY table homemade drill press using hand drill. On a solid base is mounted a hollow stand-tube, movably installed inside the stock. On the one hand, he sliced the rack...
FOR THE CHRISTMAS TREE
How to collect Christmas tree garland, if you do not have ammunition for the bases of the lamps? Instead, you can use rubber or PVC tube electrical tape. They are well isolated from the...