RepRap for Science—How to Use, Design, and Troubleshoot the Self-Replicating 3-D Printer - Open-Source Lab: How to Build Your Own Hardware and Reduce Research Costs - page 112

FIGURE 5.15 Loading the deep nut traps.
Next construct the idler as shown in Figure 5.16 in the following order: nut, washer, plastic,
washer 2 bears, washer, and nut. After the idler is complete, load bearings on the motor and
idler sides (two on each of the z -axis) and mount on vertical smooth rods as shown in Figure
5.17 . Slide the two smooth rods through both of the plastic x -axis sides. Mount the x -stage with
three bearings on the two smooth x -rods (two bearings on the motor side and one on the oth-
er). Then put M3 × 20s all the way through the idler side with washers and bolts. For details,
see Figure 5.17 . Your x -axis should be complete so now make sure it is level. You can also use
a plumb bob to ensure that the vertical smooth rods are directly vertical as shown in Figure
5.18 . Repeat this step on the other side. The stage should slide up and down effortlessly, when
it does tighten it all down. You should now have a completed frame with x , y and z , all set up
as shown in Figure 5.19 .