A Simple 1 Channel Relay Case (Encloser/Box)

Now I am customizing my Anet A8 with Octoprint and Raspberry pi. This time, I'm trying to make my Octoprint server controls power On/Off of Anet A8 by using a relay. So I tried to find a case fo my cheap relay on thingiverse. But i wasn't lucky enough. There are many awesome cases for various relays but none of them was for mine. So I designed one by my self.

For Relay size: 1 channel / 43 x 17 x 20 (mm)

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2018-06-19 FIX (v4 & v5)
- v4: I had to admit that the case of version 2 was