I have an idea what you're talking about: Decompiling without using a tool designed specifically for decompiling.

Double-click crowbar or crowbar.exe, depending on your Windows properties
Click the Decompiler tab in the top-left
Click Browse..., and select the model you want to decompile
Make sure Reference mesh SMD file is ticked on
Click Decompile MDL file in the bottom-left
You should now have SMD files of the model you just decompiled in a "decompiled 0.25" sub-folder of the model you decompiled
Open Blender
Click outside the splash screen
Click File > Import > Source Engine (.smd, .vta, .dmx, .qc)
Browse to the "decompiled 0.25" sub-folder of the model you decompiled
Double-click one of the SMD files
Done

Was that really that hard?

Oh? How's that? After all, that doesn't mean MAKING a model, only EDITING a model.

Model creation involves compiling models. Model creation does not involve decompiling models.

Not really. What you want: A way to decompile models without using a model decompiler. That doesn't make sense.

If you can't figure out decompiling a model in Crowbar, why not just say so? That'd be easier for us both.

引用自 CECZI：

Only one missing feature of a full complete tool

If you're talking about Crowbar... No, it's a model tweaking tool, not a modelling tool.
If you're talking about the Blender Souce Tools... No, it's a model making tool, not a model tweaking tool.

If you want to make changes to an existing model, just decompile it.

Because the Blender Source Tools are for creating models, which involves compiling them.

There is already one. It's called "Crowbar".