This brush is good for sweeping up semi large debris like drywall or sweeping up your scrap wood and bolts. It is very versatile in how you make it. Example, if you wanted to sweep smaller things than put two rows of bristles.

Supplies

wood
drill with bit the size of your bristles
sandpaper
weed wacking wire, these are your bristles.
scissors or pliers

Step 1: Pick Your Wood

You need a long and straight piece of wood, if intending for hard use, use a hard and straight grained piece. Using a dowel feels better when sweeping but I find it slightly hardly to drill through. For this instructable I used a rectangular piece of pine wood about 14 inches long. You want enough room for bristles and your hand so I fond anywhere from 14 - 20 inches works well for a medium sized brush.

Step 2: Sanding the Wood

Take some 120 or your choice grit sand paper, I used a sanding sponge that was 120 grit. Then sand the whole piece of wood, Make sure to spend some more time on where your hand is going to be at. Also don't overlook this step, your brush will be much more comfortable with no sharp edges.

Step 3: Cutting the Bristles

Use your scissors or pliers to cut your weed wacking wire to length. Once cut mine were all around 8.5 inches. Make sure that you are using wire that's in a roll because it makes the brush preform better in the end.

Step 4: Prepare Your Drill

Put on a bit that is only slightly bigger than your cut bristles. I also put my drill on it's lowest setting so I could be more accurate when drilling.

Step 5: Mark Your Holes

Grab a permanent maker and put 2 evenly spaced dots per inch, I only eyed mine and did not measure. I also put one large dot where the handle started.

Step 6: Drill Your Holes

Go slow and try to stay in the middle when you are drilling.

Step 7: Thread the Bristles

Take one bristle and fold it in half. Then put the two ends in two holes, when you let go you will see the ends go past each other. Do this for all of the two holes.