At first, thank you for interested in my RepWalker! "RepWalker" is one of the motor module for my robot platform "Shellmo". Basically, I designed RepWalker for controlling by "Arduino", but you can try moving test with simple circuit. Required time for making RepWalker Printing: about 3hours (by Replicator2) Assembling: about 1~2hour Required print size: 96x40x26mm If you will try to make RepWalker and you have 3D modeling skill, please also challenge to customize the "Claw" and "Crank" and "Link". For example, I want you to find the slip less shape of Claw. Introduction http://shellmo.org/article-repwalker.html Making RepWalker (walking test movie is here !) http://shellmo.org/making-repwalker.html Download another files(.skp .obj .blend .3ds) http://shellmo.org/download.html#repwalker Please ask me anything about RepWalker and Shellmo. I can support you. Printed parts: RW_Head 1 RW_JawLeft 1 RW_JawRight 1 RW_ClawLeft 3 RW_ClawRight 3 RW_FrameA 2 RW_FrameBL 2 RW_FrameBR 2 RW_FrameC 2 RW_MotorBase 2 RW_MotorCover 2 RW_Crank (D3.45 L=8) 2 RW_Link 6 RW_Cring 6 RW_2mmRing *2 Other parts: 100:1 Micro Metal Gearmotor "HP" 2 http://www.pololu.com/product/1101 Jumpwires 4 https://www.sparkfun.com/products/8431 Breadboard 1 https://www.sparkfun.com/products/12044 AABattery 2 https://www.sparkfun.com/products/9100 2xAABatteryHolder 1 https://www.sparkfun.com/products/552 8mmLength M3Screws 24 http://www.pololu.com/product/1076 M3Nuts *24 http://www.pololu.com/product/1069 Tools: Pliers Solder iron and Solder Drill and Drillbit(Diameter 3.0mm) Screwdriver(+ shape)