Make a fully constrained base

Make a fully constrained base — guided practice

Create a rectangle whose size and position are fixed.

Continue desk-token.FCStd. Target: rectangle 60×30 mm on the XY plane with its lower-left point at the origin.

1. 1. Start the sketch

   Switch to Part Design. Create a Body, then Create sketch; choose XY plane. Use the rectangle tool to draw a rectangle roughly above and right of the origin. Exit the tool with Esc.

   You should see: One closed rectangle appears in a Body.

   Part Design expects a coherent solid-building history.

2. 2. Set the width

   Select the bottom horizontal edge and apply a horizontal distance constraint of 60 mm. If the current version offers a general Dimension command, choose horizontal distance.

   You should see: The bottom edge is exactly 60 mm.

   Typed dimensions are more reliable than dragging.

3. 3. Set height and position

   Select a vertical edge and give it a vertical distance of 30 mm. Select the lower-left vertex and the origin with Ctrl, then apply Coincident. If already coincident, do not add it again.

   You should see: The solver reports fully constrained; rectangle dimensions are 60×30.

   Size alone leaves a shape free to move.

4. 4. Save and challenge

   Close the sketch and save. Reopen it and try moving a corner. Read the solver message. If redundant constraints are reported, undo the last duplicate constraint.

   You should see: The rectangle cannot freely move and has no redundant constraint warning.

   The solver, rather than a color alone, verifies the state.