I've been toying with this idea for a while, I've decided I will make videos based on my findings so people can use these tricks. As I release new videos I shall add the links to this thread. I don't know if this is better here or in the "Help Me" section. If anybody else wants to share a polymer trick, just add your link here or explain what you found and I'll add it to the list in this post.
Of course I can not be held rersponsible if you screw up your map, these aren't "Supported" methods and might get broken as EDuke is updated.
Video #1; In this video I explain how to make simple tunnels and bridges as well as a simplistic balcony that shall be expanded upon in a later video.
Next time, I shall demonstrate how to add a sloped roof to a building, make a simple RoR effect and improove the balcony.
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