(In HL, pak0 is low definition, pak1 is high def. First, extract the models you want to edit from the pak files. In this tutorial we will use the high definition hgrunt.mdl as an example again. Wally or any kind of pak explorer to extract the models from the pak files.Half-Life, and any mods you want to nick heads/weapons from.It will show you how to edit existing models and give them new heads/weapons etc., or how to replace old heads/weapons.īefore we start, there are a few programs you will need: OK, firstly, this tutorial is NOT designed to teach you how to create models from scratch with MilkShape 3D.