JohnnyEnglish tutorial Creating a new Urt5 map
Starting out
Firstly, I'm going to assume you have a fully tested idea for a map, perhaps you've previously built a rough version and tested it on Urt4 and now you want to build it. For this tutorial I decided to make a map very much like dressingroom, a small 2x2 fun map, mirrored.
This tutorial will not teach you how to use Blender or any other 3d tool, but what I demonstrate should be transferrable as a technique to whatever tool you decide to use.
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Because I know how large I want the map to be I generally start with a 2d version of the map in blender, start with a plane and extrude it around to get the basic layout. I work with measurement unit's in centimetre.
Eventually, the 2d shape can be extruded to make walls, then ceilings and roofs constructed, as a single mesh or as multiple parts, whichever is easiest.