Vent
Slots cut through the wall of a case for air to flow through, from a boundary you sketch, with ribs left standing where you draw lines across it.
- Vent AdvancedPart Studio toolbar
| SchoolCAD | Onshape | Fusion | SOLIDWORKS |
|---|---|---|---|
| Vent | – | – | Vent |
A vent lets air through the wall of a case, to cool the electronics inside, or lets sound out of a speaker grille. Sketch the vent's outline on the wall and draw a line across it wherever a rib should stay: the openings between the ribs are cut through the wall. It works like Vent in SOLIDWORKS.
Vent is in the Advanced tool set. In Standard, find it with Search tools (` or Alt+C), or switch to Advanced at the end of the toolbar.
How to use it#
- Make the case first, hollowed out with Shell.
- Start a sketch on the outside face of the wall (click the face, then Sketch).
- Draw the boundary as a closed shape, such as a rectangle or a circle.
- Draw a line right across the boundary wherever a rib should go. Lines in both directions make a grid.
- Click Vent (in the Boss ▾ menu on the toolbar), check the Width of ribs, and click ✓.
Options#
| Option | What it does |
|---|---|
| Sketch (Boundary) | The sketch with the boundary and the rib lines. Each space between the lines becomes an opening. |
| ⇅ (Opposite direction) | Cuts the other way from the sketch. SchoolCAD looks both ways for the wall, so you rarely need it. |
| Width of ribs | How wide each rib is, centred on its line. The boundary's own edge stays where you drew it. |
| Flow area | How much of the boundary is open: the area of the openings in mm², and as a percentage. More open area lets more air through; wider ribs make the vent stronger. |
Tips#
- The vent is cut through the wall only, not on through the case to the far side.
- For 3D printing, ribs of 1.2 to 2 mm print well. Slots running up and down a wall print without supports.
- A circle with lines across it makes a round speaker grille.
If it does not work#
- The vent does not meet the part. Sketch it on the face of the wall, or click ⇅.
- The ribs leave no openings. Make the ribs narrower, or space the lines further apart.
- Some openings were left out. They were too small for ribs that wide, or not over the part.