Hole dialog discussion

[RatonLaveur]

That's amazing. Thank you so much for your perseverant contribution!

This will definitely help my projects when producing mechanical parts using online jobshops.

[chrisb]

With this PR both will be fixed

Thank you!

[Cyclonit]

In addition to creating 3d models for visualisation of threads there exists another option: Displacement mapping. The performance penalty of creating proper 3d threads can be avoided by applying a displacement texture to the hole and computing the thread on the GPU only.

This would result in these 3 options:

No visualization
+ Best performance
- no hints for threading in 3D view
- threads cannot be used for further operations

Displacement Mapping
+ Good performance
+ visualized threads
- threads cannot be used for further operations

3D Model
+ visualized threads
+ threads can be used for further operations
- bad performance

In any case, the user must be prompted if they want to include threads when they export files to other formats. Otherwise 3d prints might not contain any threads even though they were added in FC.

[Kunda1]

Is issue #3818 related to this thread + PR ?

[uwestoehr]

Is issue #3818 related to this thread + PR ?

Yes it is and here is the PR to fix/implement this: https://github.com/FreeCAD/FreeCAD/pull/4134

[Pauvres_honteux]

Two questions on this "magic hole maker":

Will I be able to make a "negative solid" out of this? The solid being in a body where the body have/gets a negative sign?

Will this "automagically" give thread dimensions in Techdraw when I choose to dimension it?

Both of the above exist and work in "the big french cad-program" run by Lord Woldemort!

[uwestoehr]

Will I be able to make a "negative solid" out of this? The solid being in a body where the body have/gets a negative sign?

The hole dialog should not do magic, just help users to create norm-conform holes.

I don't know what you mean with a negative solid. Could you add a screenshot of your CAD program to understand it better?

Will this "automagically" give thread dimensions in Techdraw when I choose to dimension it?

Not yet. This is one of THE main missing features in FreeCAD because threaded holes are essential - you need them very often. The problem is that TechDraw only has the info of the body outline. It would be overkill to make real threads into the hole and even then TechDraw would not know what norm was used to create the thread. So we need another solution to give the hole edge for example a tag with the thread info.

Unfortunately I am still a beginner and don't know how that is possible.

[Jee-Bee]

Automatic knowledge of techdraw could only work if techdraw have notion of the used features.
I think that is quite difficult with all different workbenches!!

[rynn]

In the german translation the dialog is too wide, because one translation is too long.
Also the HoleCutType drop-down-box is too narrow to hold the names.

image12.png (56.71 KiB) Viewed 1218 times

I don’t know ho to handle this type of translation-problem.
The HoleCutType drop-down-problem is fixed in PR 4156

Screenshot_20201217_153056.png (47.46 KiB) Viewed 1214 times

[wmayer]

Additionally git commit 627fea4e2 makes the spin box for the angle of the drill point wider again because with the current size the value is only partially visible.