Lego Portal 2 Panel
This is how to build a very basic portal panel. It can't do much, but it still looks cool.
I'm surprised at myself for ot having done this earlier, since it fits rather well with my previous builds.
The Base
Just a simple brick with hole holding a pin with an axle thru its middle for extra grip.
The Base Arm
A pin, an axle, and a pair of pin extender things are used to get the thickness and sturdiness. Same pin-axle technique used for the joint.
The Upper Arm
A more basic version of what was done with the lower arm.
The Panel Itself
Either a 6x6 or an 8x8 panel, designed however you like, on a bottom-mounted pin swivel.
It may sound official, but I have no idea what these pieces are called lol