How to import a model into gmod

The tools you need

Crowbar : Unpack, Decompile, Compile, View
VTFEdit : Convert textures

Blender & Blender Source Tool : Convert model to smd
Gmpublisher : publish to workshop if you need
(all include official download link)

1. Blender you need install blender source tool

follow it to install

install at here

you can find them when install successful

2. Model you need a model of course

Unzip it to a folder for works

(1)model
import it to blender

Adjust object's heading like this

Tail heading to Y axis

Scale the model and Edit the model as you want
Don't forget Shade Smooth
Scale to 39.37 (1000mm = 39.37...inch)

Check the Face Orientation.

This is what should it looks like.

If outside is red, that mean you need to invert it.

this is wrong.

Follow this to fix.

the last thing is change model's name to connect textures.

It should be like this

(2)Physical model physical model, or Hitbox

model won't collide to anything without it.

as for the missile, we don't need some complication hitbox.

So a Cylinder would do.

nothing hard, just make sure it has a single collection

Now the most work of model has done.

3. Export and Others

(1)export

first let's export the model

just don't forget to select "SMD"

then you can see them

(2)Others Now create a folder of idle.

Then copy your model smd into it and rename it to "idle"

After that, create a TXT file and copy this into it.
(just a txt, not code)

// Created by Crowbar 0.74

$modelname "missiles\name.mdl"

$bodygroup "Body"
{
studio "name.smd"
}

$surfaceprop "canister"

$contents "solid"

$illumposition -0.045 1.954 -0.077

$cdmaterials "models\missiles\"

$attachment "exhaust" "root" 0.00 65.00 0.00 rotate -0 -180 0

$cbox 0 0 0 0 0 0

$bbox -50 -6 -6 50 6 6

$definebone "root" "" 0 0 0 0 0 0 0 0 0 0 0 0

$sequence "idle" {
"name_anims\idle.smd"
fadein 0.2
fadeout 0.2
fps 30
}

$collisionmodel "name_physics.smd"
{
$mass 40
$inertia 0
$damping 0
$rotdamping 0
$rootbone " "
$concave
$maxconvexpieces 90

}
You can edit the path or something by yourself,
And replace "name" as you want.

Rename it to your model's name with ".qc"

We will talk about others setting in QC later.

4. Crowbar
It's time to compile it

Crowbar setup like this

Then select "compile" and like this

Crowbar will tell you if there is any error, if everything good it will like this

Then you could find them

That is not the last

Select "view" and import your model.

Check the Physics and Attachment.

This is a missile model, so it require correct position for Motor effect

The direction should like this, yellow axis to front.

Change the values in "Translation" to adjust it, then it will output a string of QC file.

Replace that attachment string.
and also you can measure model's Size and change bbox string.
this is bbox

Save it and Compile again.

Warning: If you are re-compile a model that was Decompile from GMOD's mdl.

That will make your physics and attachment to wrong position and direction.
You need to check it in "View" and adjust it until everything is correct.

Now the model's part is done, Let's deal with textures.

5. VTFEdit

ah, it's simple

These

Import them to VTFEdit.

Use Default setting.

Then, SAVE AS

Setting

Then you will get this.

Just make sure the texture path is correct.

Now you should have these files.

6. Pack up

Create a folder in Addons.

When you finish this, if everything is right,
You should able to see textures in Model Viewer

Then let's put models in.

Time to check our works.
That is it.