The most important thing is to be certain that your spokes are the correct length for your hub and rim.
I did this at TechShop in Menlo park with regular tools, no special bicycle tools were necessary.
Step 1: Lay Out the Parts
Step 2: Insert the Spokes - Side One
This presents a problem as the spokes will hit the other larger flange. To get around this you can push the spokes with your fingers as you push down or just pull them where you want with a pair of pliers. Do be careful to bend the spokes as little as possible during this step.
In the pictures you can see the different ways of inserting the spoke and how I went about the task.
Step 3: Lacing the Wheel - Side One
My rims have off-set holes so it's important to use the holes for the correct side. Since none of the spokes cross just take one and put it into a hole. I like to start with the correct hole closest to the seam in the rim. When building wheels it is best to start at the seam or the hole for the valve stem.
Insert the threaded end of the spoke through the rim and apply a nipple. Tighten the nipple until no threads are showing. If we thread all the nipples the same that ensures that there is even tension on the wheel. It's pretty important.
Continue this process until all the spokes and nipples are in place.
Step 4: Inserting Spokes - Side Two
Drop the spokes in one by one from outside in utilizing every other hole in the hub flange then do the reverse direction with the other holes.
Step 5: Lacing the Wheel - Side Two
The spokes from inside out will go counter-clockwise and the others will go clockwise. This makes a general crossing pattern and we will add a specific cross. In my hand I'll take two spokes that will cross, they will be spokes fro opposite sides. In this particular pattern there will be two spokes in between the ones that cross, sometimes we will have four spokes in between. The more spokes in between the greater the number of crosses and the stronger the wheel.
With the two crossing spokes in my hand I see where they line up on the rim and when i find the place the lines up the best I insert the upper one into the hole and add a nipple. Again I will thread the nipple until no threads are showing on the fork. Next I'll insert the lower spoke and tighten it's nipple.
I like to go counter-clockwise when building so I will turn the wheel a little clockwise and take the next spoke from each side then cross them and insert them into the rim. I will repeat this pattern until the rim is fully laced.
VOILA! We built a rim! Now we need to add tension and true it but we will do that another day.
Thanks for reading.