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Victor Santos Oliveira
91638cb1f3
* claim: #5237 command-level guide follow-up * docs: add practical command guides and resource contributions (#5237) * docs: index practical guides and reject incomplete command links
2.4 KiB
2.4 KiB
Fold a sheet metal edge back through a half turn to form a return. Use a hem when you need a doubled-over edge, rather than an upright wall.
Before you start
- You need an existing sheet metal body and a supported free sheet edge. Make a base flange or convert a suitable solid plate first.
- Select the edge, not a sketch line, face or point. Hem does not require a new sketch. A bend along a line inside the sheet uses Fold instead.
- Leave room for the return so it does not run into another wall or return.
Options
| Choice | Meaning |
|---|---|
| Edges | The sheet edges to turn back. Check that the preview changes the intended edge. |
| Length | The return's length, measured to its outer face. It is not the thickness of the sheet. |
| Gap | Controls the inner radius of the return bend. Leave it empty to use the sheet rule's hem setting. |
| Flip | Turns the return toward the other side of the sheet. |
Try it: a returned edge
- Create an 80 × 50 mm base flange in 1.5 mm sheet.
- Choose Hem and select a free 80 mm edge of the sheet.
- Set Length to 8 mm and Gap to 1.5 mm.
- Check which side receives the return; use Flip if necessary, then confirm.
- Inspect Create Flat Pattern to see the material needed for the bend.
Tips and common mistakes
- Do check the bend in the preview: an edge returning toward another feature needs enough clearance.
- Don't draw a sketch line to tell Hem where to bend. Its input is an existing sheet edge; use Fold for a bend line through a panel.
- Don't use Hem for an ordinary right-angle wall. That is an edge Flange.
Examples and community resources
| Resource | What to explore | Author and licence |
|---|---|---|
| Editable hem demo | The sheet rule, base flange and 8 mm return used in this illustration. | SolidCraft contributors; MIT OR Apache-2.0. |
Contribute a tip, demo, model or screenshot, explaining the selected edge and dimensions.
See also
{{#command sheet.flange}} makes a base sheet or an angled wall. {{#command sheet.fold}} bends along a line in the sheet. {{#command sheet.manage_rules}} sets the default hem gap. {{#command sheet.flat_pattern}} shows the developed part and bend lines.