A radial drill press made from spare parts

Step 8 Use

It doesn't work much different than a manual pillar drill press - angled holes in wood work best with a bradpoint bit without spurs, and through holes need a sacrificial layer above the table. Handwheels control the height and extension of the head, and angles have to be set by hand. Each adjustment on the drill can be locked in place, including the depth stop which is just a couple jamnuts.

It still needs wipers, it could use a return spring, and vernier protractors for the different pivoting parts would be easy to make and might improve it. The table feed isn't positive, but there's about a meter of cable wound on the pulley to reduce slipping. I might make a vernier for the front, and will probably need to make a brake and way covers for it sometime.

Drilling speed depends entirely on the combination of material, bit size and feed rate, the feedback is kind of helpful but I ordered some surplus permanent magnet treadmill motors that might work better.

Comments

[threesixesinarow]

Wrong size, even if you use Vienna inches