Trying to see what i did and how to fix it

[BackEMF]

I'm trying to move the wedge shape down and join it at the bottom of the T shape

Probably trying to go to fast. Is there a way to split the wedge shape from the NEMA without having to re draw?

I'm still new to FreeCAD, i'm sure there are better ways to do draw the same thing, so hints are welcome.

[jmaustpc]

your wedge is defined by a sketch.
That sketch is "mapped" or attached to the top face of the "T shape"
Just select the new face you want to attach the sketch to (the bottom face of the T-shape), then click on the "map sketch to face" tool, via the icon on the PartDesign tool bar or the PartDesign menu. Select the appropriate sketch from the drop down list and that's it.

You might want to use the external geometry tool to align the sketch appropriately to the face you just mapped it to. If so hide all solids in your history except the last one containing the face you just mapped the sketch to, then external geometry tool will work. If it does not work it is almost always because you have the wrong solid not hidden, in your history.


Further to the above,
You can detach a sketch from all faces if you ever want to by:-

Go to PartDesign WB, PartDesign menu....reorient sketch, and error message will pop up saying

Sketch with a support face cannot be reoriented.
Do you want to detach it from the support?

Click "YES"

attach the sketch to XY, or other, plane.

[bejant]

Just a minor correction (which now has snowballed into a monster):

your wedge is defined by a sketch.
That sketch is "mapped" or attached to the top face of the "T shape"

No, per the Dependency Graph, "Sketch001" is really Mapped to a face of the solid "NEMA 17":

20140725a_BackEMF.png (28.24 KiB) Viewed 1400 times

(To use the Dependency Graph you first must install GraphViz; http://www.graphviz.org.)

Is there a way to split the wedge shape from the NEMA without having to re draw?

Do as Jim mentioned in the "Further to the above" portion of his answer. To join it at the bottom of the T shape use the Map Sketch to a Face Tool:

as Jim described.

To automatically Map a Sketch to a face of your model as you are constructing it, select the an existing face (it will turn green when you click it) and then select the "Create Sketch" tool:


You'll need to move the items in your sketch, here the top and bottom edges constrained to external geometry of "Pad" (the T-shape) with a distance of zero to the magenta lines (EDIT: sorry, they didn't show in the screen grab):

20140725b_BackEMF.png (10.53 KiB) Viewed 1400 times

And now the Dependency Graph looks like this:

20140725c_BackEMF.png (31.62 KiB) Viewed 1400 times

The 3 dependencies between Sketch001 and Pad are:
1. Sketch001 is Mapped to the bottom face of Pad;
2. A link to external geometry;
3. The other link to external geometry.

[BackEMF]

Thanks guys.

I'm going to read all of this a few times.
First of all thank you for the great way to explain it. This is a valuable lesson!

I see a few handy things already, now i hope i can get my head around all of it.

EDIT

HA! This is actually less complicated as it seemed.
Thanks again for the great explanation, yesterday i was really stuck with this and now it seems almost silly that i was stuck at all. I didn't see how the sketch was attached to NEMA but now i get it, and it's easy to change.

[bejant]

Glad to be of help...