There are many ways to make a "bucket feeder" This design is what works best for me.
The "nipple" is a 1 inch electrical fitting.These can be found at most hardware stores.
Ive found the 1 inch nipple makes for less wasted dog food and slows down how fast the coons can get it out.
Also with this size you can put corn in your feeder.
Just cut a small hole at the bottom of the bucket and insert nipple(it has a screw type nut) Fill and hang.I like to hang mine 3-5 feet up.This eliminate "trash" from feeding from it.see pics.