Punching in the sheet material of large diameter or curved forms used by drilling on the contour. However, the punching of the centers of the “contour” hole requires accuracy and is time consuming. Much faster the work will go if the core is to equip a retractable pointed foot with locking screw. Sticking with it the necessary distance between the edges, you can start punching without a preliminary marking: it is enough to set foot into the previous hole.
Recommend to read
RESONATORY CLIMBS
Today I want to introduce You to the model class B1, having almost the same set of wings. This force diagram consoles with a transverse set of pine slats is fully justified, since for...
LIKE STANDARD
If in the manufacture of furniture or other structures needed to drill a large number of holes of the same strictly defined depth — make for drill shown in figure limiter. This may be...
