Nothing Happens When You Hit Export
Model does not compile when you hit export. Here are some solutions.
Why are Models Appearing as Cubes?
When reopening a scene the models can appear as cubes if the game settings do not include paths to the source MDL files.
This document explains why models can appear as cubes instead of props when importing VMF or MDL nodes.
Getting Started with your Sky
Getting started with your level with the intent of building both a 2D sky and 3D Skybox.
Hull Helper
Hull Helper is a simple UI to speed up making hulls from complex models.
Using 4Way Blends
Overview of creating and working with Lightmapped_4WayBlend shaders in Wall Worm.
Bitmaps to Materials
Information on creating substance-driven material libraries and generating tri-planar projection textures without need for UV mapping.
Collision Model & Physics
The Collision Model & Physics rollout in WWMT. Assign a collision hull, create a hull with the Quick Hull function and use advanced features such as the Convexity Hull Wrapper.
Recovering a Displacement Mesh
This page explains how to recover your displacements from a Sculpt Mesh that was never committed.
Advanced Texture Controls
With Wall Worm Pro, you can export arbitrary texture maps as VTF files in Source.