Part: an overview
The Part workbench turns sketches into a body and refines that body further. The work goes through a history timeline: every command adds a node to it, and the whole order stays alive — go back to any step, change a number, and everything below rebuilds.
A part is ONE body
The first feature creates a body, each next one carries it further: an extrusion adds material, a cut removes it, a fillet reshapes it. Intermediate states do not pile up as separate bodies — you always see the result of the chain. The exception is pieces: Split body and a cut that goes right through the body leave the pieces bodies of one part. The pieces are rows of the Bodies list in the part's tree. The right button on a piece, on the canvas or in the tree, -> Make a part: a name is asked beside the cursor, Enter moves the piece into a part of its own.
Two kinds of commands
- From a sketch: extrude, revolve, sweep, loft. They need an outline.
- On the body: fillet, chamfer, shell, hole, draft, thread, arrays, mirror. They need edges, faces or the body itself.
Plus primitives — box, cylinder, sphere, cone, torus, prism: a body without a sketch, from sizes alone.
How every command works
- Selection. A click on the part takes the face, edge or vertex under the cursor; what will be taken is highlighted before the click. A double click takes the whole body. A frame dragged from empty space takes what falls inside it.
- What is selected before the command is taken at once; with nothing selected the tool waits for you to point at what to take.
- Modes are in the top bar, values in fields right at the geometry; a field takes a formula:
40/2,len*2. - The preview shows the result before it is applied. A value the geometry will not accept is refused at the field before Enter, with the reason.
- Enter applies, Esc cancels. Until Enter the document is unchanged.
Editing what is built
A double click on a timeline row reopens the same command with the same fields. Change and apply — it rebuilds, and so does everything that depends on it.