Building the x-carriage
First step is to build the bearing supports. Put them together as shown in Figure 1 and Figure 2. You will need to make a total of 4 of these.
Figure 1 - Putting together an x-carriage bearing guide
Figure 2 - Complete bearing guide
Next add mounting bolts and nuts to each of the four (4) bearing supports from above. Just run the nuts up the bolt a few turns at this step, leaving the through bolts loose.
Figure 3 - Adding the mounting bolts
Figure 4 - Mounting bolts in place, but loose
Next mount two (2) of the bearing-supports onto each end of a x-carriage half. Once in position tighten the bolts to clamp the bearing guides in place. Repeat this step for both x-carriage halves. One of the two halves is done at this point, the other gets additional parts and will become the lower x-carriage.
Figure 5 - Adding the bearing supports to the x-carriage plate.
Figure 6 - Bearing supports in position and tightened.
Next assemble the belt mount by attaching the two belt clamp blocks to the belt-plate. Keep all of the nuts loose at this time. Once mounting on the machine, the two smaller block are used to clamp the x-belt to the x-carriage.
Figure 7 - Assembling the belt clamps
Figure 8 - Assembled belt clamps, notice that everything is loose
Add the assembly mounting bolts and nuts as shown, keeping loose until next step.
Figure 9 - Adding the mounting nuts, kept loose for now
Now mount the assembled belt clamp onto one of the x-carriage half, and tighen the two (2) mounting bolts. Leave the four (4) belt block nuts loose for now. This x-carriage half will be the lower half of the x-carriage when assembly is completed.
Figure 7 - Attach the belt clamp to lower carriage half
Figure 8 - Assembled lower x-carriage half
On to Phase 8