Manually draw lines on a drawing (TechDraw add-on)

[NachoZurbano]

Hello!

I am doing a manufacturing 2D drawing of a 3D body. I managed to place and annotate the desired views. However, I didn't find a way to manually draw on the drawing page. I need this to mark some threaded parts according to ISO norms. I managed to add a leader line but this is rather impractical because you cannot easily set the dimensions. I have also seen that there is the Cosmetic line functionality, but I think this requires to have vertices.

I don't know if this is pertinent, but in Autodesk Inventor there is an option which allows you to add a sketch directly on top of the frame of the view. You can also project the 2D drawing into the sketch. Is there any similar functionality on FreeCad? How can I manually draw on top of a drawing page?

Thank you very much in advance.

[papyblaise]

there is currently no solution to simbolize the threads (to my knowledge) according to ISO

[chrisb]

You can't draw directly on a TechDraw page. You can, however, draw a sketch with all the power of using external geometry etc. and add that to the TechDraw view.

[NachoZurbano]

@chrisb, thanks so much!

Would you mind giving some more details? Do I have to create a new view while selecting the sketch? If I do so, the view of the sketch will block the view of the piece... Is there any other option I'm not aware of?

Thank you

You can't draw directly on a TechDraw page. You can, however, draw a sketch with all the power of using external geometry etc. and add that to the TechDraw view.

[chrisb]

Would you mind giving some more details?

1) You add your sketch to the model so that it occurs in 3D view where you want to have it.
2) Select the view where you want to have the additional lines.
3) Click on the Source property's value. Click on the button occurring to the right.
4) Add the sketch to the selection. Sometimes this doesn't work on first try; try again.

[mendy]

Here is a sample using model threads and also TechDraw Tools macro. Probably not ISO.
Note: Threaded cylinder is remodeled as model threads fails based on reverse as I remember from a post by @chrisb.
On a larger sheet so scale is 1. If nothing else had to look up section view, another new thing for me.

[NachoZurbano]

Many thanks, Mendy
@

Here is a sample using model threads and also TechDraw Tools macro. Probably not ISO.
Note: Threaded cylinder is remodeled as model threads fails based on reverse as I remember from a post by @chrisb.
On a larger sheet so scale is 1. If nothing else had to look up section view, another new thing for me.

[M4x]

Have a look at this: https://forum.freecadweb.org/viewtopic.php?f=35&t=59334