Selecting all outside surfaces

[kooper]

Hi,

what is the best way to select all outside surfaces from a case with heatsink?

I try to simulate the thermal behavior of a metal case with heatsink. Thats why I have to set the surface convection of all elements at the outside. Because the heatsink consist of several element clicking everything takes a lot of time and I am not sure, if I got all surfaces.

[chrisb]

I don't know of a direct way, but here is one possibility if it is a Part object:
- right click the object in TreeView
- select Set colors
- use Box selection to select the surfaces
- cancel the dialog (with confirmation)

The surfaces are still selected.

If you have a body you don't have the "Set colors" entry. I see the following options:
- Create a fake union with the body and something which lies completely inside of the body. This is parametric.
- Create a Part->SimpleCopy. This is not parametric.
- There is an additional workbench out there using the selection technique from the SetColors dialog, but I have forgotten which. Other may help here.

[freecad-heini-1]

I don't know of a direct way, but here is one possibility if it is a Part object:
- right click the object in TreeView
- select Set colors
- use Box selection to select the surfaces
- cancel the dialog (with confirmation)

That was the old workflow. But thanks to Werner, because he created a box-selection tool for the Part-Workbench.
Please check part box selection. If you select from the side view close to the outward surface, you can select the outer faces except the inner faces. It need a bit exercise to learn how to use this tool.
Best regards
Wilfried

[chrisb]

Please check part box selection.

Thanks for the pointer. So it was not an exernal workbench, but one of the most essential.

[mario52]

hi

i propose change the menu name to "Face selection"

mario

[chrisb]

i propose change the menu name to "Face selection"

+1