Creating a Part from an Existing FreeCAD Model

[hooshsim]

Looking for some directions on how to create a geometry and add it to the existing part (FreeCAD 0.17, Windows 7, Release 8/2018).

The intent is to fill the notch using the curves and highlighted faces.

Thanks in advance - HooshSim

[bejant]

One way:

In the Part WB, click the Shapebuilder tool:

• Choose the "Face from edges" radio button.
• Select the 3 edges on top. and click the Create button.
• Make another face on the bottom, then one more face on the end.
• Click the "Shell from faces" radio button.
• Select the top or bottom face you just created, press Spacebar to hide it, and click the other two faces you created, and the two inside faces of the model.
• Click the Create button.
• Click the "Solid from shell" radio button.
• Click the Model tab and in the history tree select Shell.
• Click the Tasks tab to go back to the Shapebuilder tool, then click the Create button.
• Click the Close button to exit the Shepebuilder tool.

20190201a.png (16.16 KiB) Viewed 454 times

20190201a-stiffening.FCStd

(847.63 KiB) Downloaded 7 times

From the Part WB, use the Booleans tool;:

or the Boolean Union tool:

to make a Fusion of Solid and Common.


OS: Ubuntu 18.04.1 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.17.13541 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

[chrisb]

How comes that I cannot take the 4-sided front as the hidden face, but only one of the triangulars?

[bejant]

I don't know... the Face has to be visible when selecting it. Selecting, from the history tree, a Face that has visibility toggled to Off isn't working for me using the 0.17 version listed below. I haven't tried using my 0.18 version.

OS: Ubuntu 18.04.1 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.17.13541 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

[chrisb]

I meant something different.

Select the top or bottom face you just created, press Spacebar to hide it,

In your description you open the top or bottom face to make the inside available. That works for me. But if I select the rectangular front and do exactly the same it doesn't work.

[bejant]

But if I select the rectangular front and do exactly the same it doesn't work.

Hmmm... I don't know why it's not working for you. After selecting the front face, then hiding it, I press Crtl to add the other Faces to my selection. Are you using a Mac, if so how do you add to the current selection? It works for me using the 0.17 version in my last reply, and works using this version of 0.18:

OS: Ubuntu 18.04.1 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.17.13541 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.15rc1
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)

[hooshsim]

Bejant,
Thank you. Appreciate the effort.

[bejant]

You're welcome, post back if you need more help.

[chrisb]

Hmmm... I don't know why it's not working for you.

Got it: After hiding the face I sometimes did not keep Ctrl (CMD on the Mac) pressed for the selection of the first additional face, thus removing the now hidden face from the selection.
Thanks for explaining.

[bejant]

Thanks for explaining.

You're welcome, I wasn't very sure of exactly what you were doing.