sphere shape in path workbench?

[GeneFC]

I think you need to select the bottom of the moat pocket. That worked for me, although it creates a lot of extra path stuff around the outside edges. You will need to do some hand editing of the final path to trim that extra stuff.

The important thing is getting the curved surface correct. That is essentially impossible to do by hand.

Gene

[herbk]

To get not to much unneeded moves, just make the "helper bottom" just about one endmill diameter bigger als the bottom of your part. Since a while 3D Pocket works without a wall at the outside of the "helper bottom".
Like Gene said, select the face of the "helper bottom" and the not vertikal walls of your part and create the path. First there are a lot of up and downsin the path, set "keep tool down" to true and you get the shown result.

szatelit_herbk.jpg (127.18 KiB) Viewed 1288 times

[bbb]

Thanks guys, I'll give it a shot soon.

[chrisb]

I'm sad to say, but Herberts's example doesn't work. The 3D pocket does not follow the sphere:

[herbk]

Hi Chris,

I'm sad to say, but Herberts's example doesn't work. The 3D pocket does not follow the sphere:

it works

szatelit_herb_2.jpg (60.44 KiB) Viewed 1274 times

If you look from the side yu just don't see it.

szatelit_herb_3.jpg (46.63 KiB) Viewed 1274 times

[chrisb]

Sorry Herbert, you are right. I thought it was the same as with my model:

Bildschirmfoto 2018-06-23 um 00.57.40.png (29.27 KiB) Viewed 1268 times

In my example the base plate ends at the front so that I can mill just the outside. If I do so, the path does not follow the sphere (see attached file).

If I move the plate so that inside and outside are milled it works like Herbert's:

[herbk]

Hi Chris,
yes, thats a stupid thing in 3D Pocket...: it only works well if the bottom is on each side bigger as the part....

[bbb]

Hi,

I have found a bug… My PC is Hungarian. The FreeCAD sets up Hungarian as default language. When you click on the 3dpocket, it does not show the setup menu for it, and the path is not generating well.
If I change the language to English (just to show you what is not working), the menu shows up, and it generated the path, as it should

hun3Dpocket.jpg (131.29 KiB) Viewed 1255 times

The attachment en3Dpocket.jpg is no longer available

Thank you all, the last thing was working nice, after I have changed the language back to English

[chrisb]

We hav seen language problems here before. It has something to do with different python versions. I guess it will heal itself as soon as python is consolidated.