[SOLVED] Involute gear - links go out of the allowed scope

[carved top]

Hey all, I'm facing issues trying to get a pad out of an involute gear.

What do I do:
- Create a part
- Create a body inside the part
- Create the gear
- Click "pad"

And whatever option I choose, it doesn't work
Any help on this? I have FreeCAD 0.17 on Windows 10, even though the same version on my Ubuntu machines does the same.

Thanks in advance

[NormandC]

Hello,

Your issue has a simple fix: the involute gear is created outside the Body and the Part. In the Model tree, just drag & drop it on the Body, and it will prevent the Links out of scope error.

Which makes me think, IMO this is a bug, the Involute Gear should be created inside whatever is the active container, Part or Body.

[chrisb]

The involute gear is created outside of the body.

Drag-and-drop it inside the body and you can pad.

Edit: Ha, same thought, Normand. Should I create a bug report?

[NormandC]

Hi Chris,

If you have the time, sure, go ahead.

I think it should be created in the active Body or Part if there is one.

Thanks!

[chrisb]

I think it should be created in the active Body or Part if there is one.

Since the gear is a special sketch, should behave like one? That means:
- Create a body if there isn't one.
- insert in a body if one is active

How about attachment? Are gears attached to anything?

[NormandC]

You've got good points, the involute gear is a 2D profile, and inside a Body, any 2D profile should be attached. So making it behave like a sketch would be logical, including opening the plane selection dialogue.

But, would there be use cases where the user wants the involute gear outside of the Body, and inside a Part container instead? Or even not inside any container at all?

Personally I don't see the point, as I prefer working in PartDesign. And the involute gear is located in the PD wb anyway. But others have not be shy saying they dislike it...

Your suggestion has my vote.

[chrisb]

But, would there be use cases where the user wants the involute gear outside of the Body, and inside a Part container instead? Or even not inside any container at all?

People who have not made friends yet with PartDesign can use the involute gear with Part->Extrude.

As you say, involute gear is in the PartDesign menu, so I would recommend the following

Short distance goal
- if a body is active, insert the involute gear in that body
- if no body is active, it behaves like it does now.

Long distance goal
- make involute gear attachment aware
- if a Body is active, create it inside Body
- if Part is active, create it inside Part
- else create it outside

[NormandC]

That's reasonable.

[chrisb]

Bug report has to wait until tomorrow (2:30 am here).

[NormandC]

Go to sleep man!