How I Printed a Humanoid - Make: 3D Printing - page 168

Today, my DARwIn-OP clone ( Figure 19-2 ) is
fully assembled, and I've spent about $6,100,
not counting the costs of the 3D printers I
used. That's still a lot—but it's almost half off
the factory price.

world—fast, high torque, and very high
resolution.

Glues not screws
Nuts and bolts are not ideal for plastic. I
glue my 3D-printed brackets together
using Micro-Mark's Same Stuff
( Figure 19-3 ) liquid plastic welder or an
ABS-acetone slurry.

Figure 19-3. Micro-Mark's Same Stuff

Off-the-shelf brains
The DARwIn-OP is controlled by an af-
fordable Fit-PC2 compact PC and a Ro-
botis CM-730 servo controller

Figure 19-2. Meet the clone!

( Figure 19-4 ).

Here are some of the things that made this
possible:
90% DIY printed
I print my parts in ABS plastic, as PLA is
weaker and more brittle. I strongly agree
with the review of the UP! Plus/Afinia
printer in the 2012 Make: Ultimate Guide
to 3D Printing . It's one of the best on the
market, and it has printed 90% of my
clone: servo brackets, structural framing,
and body covers.

Top servos
Robotis Dynamixel digital servomotors
are the leading robotics servos in the