I need help with creating a negative mold of a file

[maanasa_jayachandran]

Hello

I am trying to create a negative mold part of this mouse skull (just the top surface). I would appreciate any help! I have attached the files. mus is the mouse skull that is part i need to mold and I create a extruded block to mold the mouse skull. 

Thank you

[Wayne.peacockSF88J]

You will need to put both items into an assembly, and then within the assembly, you need to open the mold and use the copy object tool & sculpt tools.

Its best to watch (and study!) this excellent video by Neil Cross on his Tech3D youtube channel.

https://www.youtube.com/watch?v=LP4ArppuXno

[JDMather]

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@maanasa_jayachandran wrote:

...mouse skull (just the top surface).

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@maanasa_jayachandran 

How do you define "just the top surface"?

What is your intended Units for this skull?

[maanasa_jayachandran]

By top surface I mean this part.

Also intended units should be mm. 

[JDMather]

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@maanasa_jayachandran wrote:

Also intended units should be mm. 

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How much of the top - what is the height of the rectangle you sketched?

@maanasa_jayachandran 

Can you Attach the original *.stl file here?

[maanasa_jayachandran]

Here is the assembly.

[JDMather]

?

No parts?

The ipt that you attached before is incorrect units.

Requested file was *.stl .

The requested information was height of red rectangle.

Forget Message 2 by @Wayne.peacockSF88J  - that was a distraction from the real issue. Note that no solution was provided.

[maanasa_jayachandran]

Here is the .stl files. I was able to convert the mesh into a part. The dimensions are on the top YZ plane (14 mm by 10.5mm) and the dimensions from the side XY plane (14 mm by 3 mm). Basically I am trying to create a cast of the top of the skull.