Strange result in Simulations of modeled components

[GJM (Gary Morgen)]

Modeling is, again, frustrating me.

I’m trying to create a strip of wood that will take a texture that I have an STL for.
The STL is 24"x24" and the strip is 12.75"x3". The texture looks best if I import it at about .5 size.

I modeled an ADD FLAT for the strip.
Then I wanted to remove the texture:
Since the STL is a square and my piece is a rectangle, I had to create a square piece of geometry to import the STL and make it cover the entire strip:

View 3D - all looks great…

Now I want to create the toolpaths for it:
OK…Select just the strip (the bounding geometry) and add a rouging and finish toolpath:

And…show simulation:

Why is the large rectangle showing up? I didn’t select the large rectangle when bounding the toolpaths…so why are they included?

[Zman (MICHAEL ZEMANEK)]

Wouldn’t that be the size of your stock?

[WillAdams (William Adams (Carbide 3D))]

Upload your .c2d file?

I usually offset around a 3D part by endmill diameter plus 10%, see:

Making a guitar bridge for Carbide Create Pro

as requested on support… Given a file in Carbide Create which describes a guitar bridge: [image] there are a couple of different ways which this part could be made: draw up contour geometry and assign toolpaths to appropriate depths (note that this does not require Carbide Create Pro): Spoon Possible without CC Pro? model the design in a traditional CAD tool, export it as an STL and then import that STL into Carbide Create Pro and then cut that 3D model using Carbide Create Pro: Instru…