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Assembly Instructions
The purchased mechanical parts BOM is here
Click here for interactive 3D model to help visualize the assembly
Follow instructions on Wiki for printing parts.
The rods should be a tight fit. Push a loose 6mm rod into each rod mounting hole in the (4) parts that have them. You may need to twist and push hard on the rod. Sometimes I mount the rod in a drill to help rotate the rod as I push. Once the rod goes in once, it will be easy to install later.
There are several places the where screws go directly into 3D printed parts. I like to use a tap to put in the holes, but you should be able to use a screw to do it as well. It is easier to tap the parts before they are attached to the assembly.
The feet often have excess rubber on the adhesive side. Use some scissors to remove any excess and install the rubber feet into the 3D printed feet.
Use a press or vise to squarely press the bearings into the carriage block. The carriage has a little dimples between the holes for the bearings on one side. This is the side you should push the bearings into.
Press 683ZZ (3mm x 7mm x 3mm) bearings into headblock. Use a pliers or vise. They should be installed squarely.
Install the 6 smooth idler pulleys onto the carriage block, tail block, left foot and right foot using an m3 x 16mm screw. Attach them snuggly, but not too tight. The idler should rotate freely. Back off on the screw a little if the idler does not turn smoothly.
Using screws that came with the servo, install the servo. Notice the relief for the wires. Do not install the horn on the servo shaft yet.
Use (6) M3 x 8mm screws to attach the motors and PCB to the carriage block. The PCB gets sandwiched between the motors and carriage block.
Install a pulley onto each motor shaft. Aligh the height of the pulleys, so they are even with the idler pulleys installed earlier.
Push (2) shafts into the tailblock and (2) into the left foot. Push the rods through the bearings in the carriage block from the back side. Press the headblock onto the other end. Do the same with the feet.
Using a long piece of belt that will be trimmed later. Push one end into belt grip on one side of the headblock. The tooth side of the belt faces away from the center of the block. Be careful the clip can be easily snapped off.
Now thread the belt though all of the pulleys and back to the other side of the headblock. Make sure the belt is properly engaged in all pulleys and idlers. Make sure all parts are fully pushed onto the 6mm shafts. Pull the belt tight while engaging the belt in the teeth of the belt grip.
Trim the end of the belt with a little 12mm (1/2") tail exposed. It will be trimmed closer later.
...(Procedure coming soon)
It should still be taught. It not pull it out and tighten it again. Now trim it so about 3mm is exposed.
Place the part in position Use a M3 x 50mm screw to mount the part to the head.
...(coming soon)