Left Servo Mount
You will need pieces A, B, one servo, and two M3 8mm screws. Place A with the largest rectangular cutout towards the top left. Take the blue servo out of its bag and place it down through that cutout. The cable coming out of the servo should be on the left. Thread the cable through the large cut out in B then place B over the servo. The smaller cutout should be towards the right. Before screwing this piece in place, take the servo cable and feed it through the small cut out in B. Push B flush against the servo. Place both screws in the holes in B then screw into A. Do not over tighten the screws. You will snap the acrylic.
Left Servo Arm
You will need the smaller bag inside the servo bag, and C. Take out the servo horn shown below as well as all three screws. Place the center of the horn through the large hole at the end of C. From the opposite side as the horn arms, screw in the two longer screws through C and into the horn.
Attaching the Arm
For this step we need Robotics Series 3. Power up the Arduino and connect all batteries from the 6-AA battery holder. Place the servo cable from the Left Servo Mount into header P8 found at the front left of the I2C Servo Driver if the robot is facing forward. Make sure the brown wire is facing the inside. Once inserted, the servo will go to the 90 degree location. Unplug the servo cable.
Take your servo arm and place it on the servo so that the arm point to the 9 o' clock position. Plug in the servo cable again to make sure it still points to 9 o' clock. When confirmed, take the cable out and screw the smaller screw from the smaller servo bag into the center of the servo horn and into the servo. It's okay if you spin the arm while tightening, but if it is spinning then it's tight enough.
Set this aside as we proceed to the next step.
Right Servo Mount
You will need pieces D, E, one servo, and two M3 8mm screws. Place D with the largest rectangular cutout towards the top right. Take the blue servo out of its bag and place it down through that cutout. The cable coming out of the servo should be on the right. Thread the cable through the large cut out in E then place E over the servo. The smaller cutout should be towards the right. Before screwing this piece in place, take the servo cable and feed it through the small cut out in E. Push E flush against the servo. Place both screws in the holes in E then screw into D. Do not over tighten the screws. You will snap the acrylic.
Right Servo Arm
You will need another smaller servo bag of parts and F. Insert a similar servo horn into the large hole in F. Screw two screws from the opposite side through F then the horn.
Attaching the Arm
Follow the same procedure from the left side except the arm should be at 12 o' clock not 9. When the arm is in the correct position, screw the smaller screw from the smaller servo bag into the center of the servo horn and into the servo.
Take a G piece and one 6mm screw. Line up one hole from the G piece with the hole on the top right of D. If the servo arm is on the outside of the piece then G should be on the inside. Screw the 6mm screw through G and into D.
Set this aside as we proceed to the next step.
You will need pieces H, i, J and one 8mm screw. Line up the hole in H with the hole in the rounded part of i then J. The H piece should be closest to you. Insert the screw through H into i then J. Not too tight as we want the parts to move freely.
To start the base of the arm you'll need the middle mount, left servo mount, K, L, a 12mm screw and nut. Place K with the large tabs facing up and down and the small tabs should be below the cutouts. Place the middle mount on top of the K piece. The side with the hole should be on the right. Line up the slots in L with the tab in K and the tab in the middle mount. Connect the left servo mount to K. The side of the left servo mount with the arm should be facing K. Slide the mount into the tabs in the top K as well as L. Place a nut in the T-slot in L then insert the 12mm screw through A and into the nut.
Take the M piece, a 12mm screw, and nut. Slide the M piece into A. It should be similar to how L worked. If the already constructed base is too ridged, try loosening the t-sloted 12mm just a tad to allow for some flex. With the M piece in place, again put a nut in the T-slot and then insert a 12mm screw through A and into the nut.
Take a G piece and one 8mm screw. Place G between the holes found in C in the left servo mount and J in the middle mount. Insert a screw through C, then G, then tighten into J.
Take the N piece, a 12mm screw, and a nut. Place N into i. There is a curved section in N which should be on the bottom right of the piece. Place the nut into the upper t-slot and insert the 12mm screw through i and into the nut.
Slide the right servo mount towards the base we have already constructed. First, insert F into N. Place a nut into the lower t-slot and insert the 12mm screw through F and into the nut. Fit tabs in K, L, and M into D before fully tightening. Place a nut each in t-slots found in L and M. Then insert a 12mm screw through D into each nut and tighten.
Take the O piece and two 6mm screws. Place O between i and the G piece coming off of the left side. Insert one 6mm screw through G and tighten into O. Insert the remaining screw through O and tighten into i. Not to tight as we want free movement.
Take pieces G, P, Q, a circle spacer, two 8mm screws, and one 6mm screw. The following directions assume that the letter Q on piece Q is facing so it's readable. Place a 8mm screw through the bottom hole in Q. Now place P through that screw as well. Now tighten the screw into the hole found on F.
Slide a circle spacer between the left hole in Q and the G piece already attached to D. Insert the remaining 8mm screw through G and the circle spacer before tightening into Q.
Take the free G piece and insert a screw through either hole. Tighten this screw into the remaining hole in Q from the back. The opposite direction that you did the two previous 8mm screws.
Take pieces R, S, T, U, the remaining servo, and four 8mm screws. Place R so that the letter faces up and is to the left. Place S and T as they are seen in the pictures below. Place the servo face down and with the cable coming out the left. Once the servo is flush with R, place U on top. Make sure to line up the larger notch in U with S. Insert all four 8mm screw through U and into R.
Take pieces V, W, X, one 8mm screw, and one 12mm screw. Insert the 12mm screw into the upper hole in R and the 8mm screw into the lower hole. Flip over the servo mount. Place W on the 12mm screw and X on the 8mm screw. The two arms who should be geared together and in the close position seen below. Place V on the two screws such that the V is facing up and points away from the arms. The 8mm screw should be tightened into V at this time.
Take the one sided servo horn out of the small servo bag. Place it in the center hole of Y with the horn above the slotted lug. Take a long screw and tighten it through the slot and into the horn.
For this step we will again need the fully powered drawing robot. Plug the servo in the servo mount into P7 in the I2C Servo Driver. It will move to the 25 degree position. Place the Y piece on the servo with the horn facing away from the claw arms. Affix Y in place with the small screw.
Finishing the Claw
Take pieces Z. Y+, one 8mm screw, and two 6mm screw. Open up the claw arm to 180 degrees. Place Z over V so the center hole lines up the 12mm screw from before. The other hole in Z should line up with the one in W. Insert the 8mm screw through Z and into W. Place Y+ on top of Y and insert a 6mm screw into both holes.
Gather the other circle space and three 8mm screws. Insert one 8mm screw through P and into the higher hole in S. Insert one 8mm screw through G and into the lower hole in S. Take the remaining 8mm screw and insert it through O and into T.