Step 1: Materials and Tools
Rebar - Cut shorter than your hole (mine are six inches shorter than my hole)(I was only using two per hole. Three or four is done the same way just repeat steps 4 and 5 for each additional bar)
Measuring tape or Speed Square (Speed Square is speedy)
1/2 inch drill bit (I had a spade bit handy)
Step 2: Measuring
I used my square to scribe my lines
And then I marked the 1 3/4 inch centerline of the 2x4 to know where to drill my holes.
Step 3: Drill and Cut
Drill your holes as marked
The "rig" done
Step 4: Using the Rig Step One
Cut about a foot of rebar wire
Center wire and wrap one end around the rebar a few times. (This is where the pliers come in handy to tighen up the wrap so it does not just fall off the rebar afterwards.)
Do the same to the other side.
Step 5: Using the Rig Step Two
Cut another piece of wire this time about 3 feet long
Center wire and wrap as before. You should have a bit more than a foot of wire sticking out. (I inserted some blue lines to help you see the wire sticking out)
Again, same on the otherside.
Step 6: Tada!
I put a few shovels full of wet cement down the hole so the rebar does not swing around as I'm adding the rest of the cement.
I hang the bar several inches below the edge of my tube and bend the wire over the tube to hold it in place.
Fill the hole with cement until the rebar is covered.
Then unhook the wire and bend them into the cement as well.
Then finish filling the hole.
Hope somebody finds this useful