This is a start to getting:
Open Source Robotic Arm optimized for Ponoko. Although you can cut this WIP file there are several steps to optimizing the layout to lower making costs. Could be quite a bit of savings so it'd be worth the time for someone making the design @ ponoko.
I have setup the design to conform to Ponoko's needs, regrouped parts for easier moving and moved a few spots of unneeded part overlap...
Here's some more changes I'd recommend take place in the file:
-Right now it's in a P3 sheet although this design might fit if re-nested into a P2 sheet; this will lower material cost and waste.
-Reorganize parts to share more cutlines. Lowers making cost.
-Remove shared overlapping cutlines. Lowers making cost.
-There are some more areas of unneeded part overlap that do not save money and might be simply small placement errors.
-Double check part dimensions to increase cutline sharing.
Some examples of uneven sides, the top of RARM-17 and the left side of part RARM-06A. There could be a reason for these that I'm unaware of?
-Couple circles that show as vector lines, double check that they shouldn't be cuts instead.
If you decide to make these changes to better this file for cutting in Ponokos system reupload the design for others to use. Let me know and I will link to the new file from this page.