Here I'm presenting a showcase of my initial days of Rigging in Autodesk Maya, two and a half years ago when I learnt basics of Rigging and Skinning.
This was my first Biped Rig, I have composed it recently, thought to upload this too as it refreshes and motivates. I have uploaded a video of Mechanical Objects Rig also, you can check that out.
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Hope you'll like it.