@Stiles The process is exactly the same, the only difference is that Blender now has a different UI.

I really wish there would be an up to date version of this :/ It's so annoying because I really want to add a custom item for TTT and it should be shown inside the hand of the player (doesn't need any animations) but I want it to use the c_models of the playermodel players selected but I have no clue at all how to create those viewmodels. I imported the same arms you got and also adjusted the pose so that my custom item is inside the hand but I can't really figure out what to export and how the structure of the collections should be... and then there is the stuff with the mergebones and definebones (definebones is easy with crowbar but no idea about mergebones).

This game is so freaking old and still popular and it is so sad that besides this extremely old tutorial there is nothing about it on the internet...

@I Drink Yogurt Out Of A Cup It does. It probably exposrts misaligned because you moved something in object mode.
https://i.imgur.com/BfvcN5z.png

Hey BOO342, does the 'Child Of' constraint not translate properly into Source? Im using it for the hammer on one of my weapons, although it goes from looking perfectly fine in Blender to being misaligned in GMod. I can provide pictures or project files if needed, I would greatly appreciate any help

@Buu342 i see, thanks for the advice!

@banana mann You don't do that in Blender, you do that in code.

how would i add camera animation?

i love you

@Citing Either parent them, or add a Child Of constraint
https://www.youtube.com/watch?v=E5r6tYRypBo

How can I make that the bones move synchronised with the arms model?