Step 4: Making the ball-bearing supported shaft 2
Now you will need something to hold the bearings and shaft. You might be able to find something at the hobby shop which would work. But at worst, just find a block of aluminum, plastic, or wood which is about 1" diameter and 2" long. Drill a hole all the way through the long way, larger than the shaft but smaller than the outside diameter of the bearings. for example with bearings that have a 1/8" ID and 3/8" OD, i drilled a 1/4" hole so the shaft won't touch it. Now at either end of the block drill a 3/8" hole right on top of the 1/4" hole, but only drill in about 1/4" (far enough for the bearing to fit into the block.