Sheet 12 of 12

Final Project: A Small Enclosure from Sketch to DXF

Q: You want round reliefs at all four corners of the box. What do you do?

One Flange on all four edges, Corner Relief Shape Round. Corners are closed and relieved between the flanges of one feature, so pick all four edges in one Flange and choose Round under Advanced.

Q: Why Unfold before drawing the cable hole?

So the hole can be sketched on the flat sheet, where the wall lies flat. Unfolded, the back wall lies flat beside the base, so you sketch the circle there, cut it, and Refold carries the hole up with the wall.

Q: The hem's bend in the bend table has which angle?

180°. A hem folds the edge right back onto the wall, so its bend is 180°.

In 10 minutes you'll put the whole course together: a small vented enclosure with four walls, round corner reliefs, a hem, a cable hole and a perforation, ending with the DXF and bend table for the shop.

Part: Final project: enclosure
Rule: Steel 1mm
Sheet: t 1 · R 1 · K 0.4
Time: 10 min
Status: Open

OP 10Watch
OP 20Turn the part
OP 30Build
OP 40Inspect
OP 50Quiz

OP 10Watch

Video in productionBuild along with the steps in OP 30 meanwhile.

Chapters

00:00The project
00:40Rule and base
01:30Four walls and corner reliefs
03:00A hem on the front wall
04:00The cable hole: Unfold, cut, Refold
05:40Vent holes with Perforate
06:40Flat Pattern, DXF and bend table
08:20Common mistake
09:00Recap and your exercise

OP 20Turn the part

Drag to turn, scroll or pinch to zoom. Flat shows the blank before it is bent: the same sheet, the same frame.

OP 30Build it in SolidCraft

Your task

Build this small vented enclosure in SolidCraft 0.21:

Make the rule Steel 1mm: thickness 1 mm, bend radius 1 mm, K-factor 0.4, active.
Sketch a 100 × 70 mm rectangle on XY, corner at the origin, and finish the sketch.
Flange on the sketch to make the base.
Flange on all four edges in one go: height 30 mm, angle 90°; under Advanced, Corner Relief Shape Round, Corner Relief 4 mm.
Hem on the top edge of the front wall (the long wall at Y = 0): Length 6 mm, Gap empty.
Unfold. New Sketch on the flat base, a circle of 12 mm diameter at (50, 85) (that's on the back wall). Finish the sketch, Extrude it as a Cut through the sheet, then Refold.
Press S and run sheet.perforate {"diameter": "4 mm", "pitch": "10 mm"}.
Open Flat Pattern (Sheet Metal tab › Flat) and write down the flat size and the number of bends.
Press Export DXF… and Export Bend Table… and save both files.

What to write down

Both numbers of the flat size (the Flat size row; the third number is the thickness).
The number of bends (the Bends row).
The allowance of the hem's bend: the allowance_mm column of the bend table, in the row with angle 180.

Type them below and press Check. If your hem folds inwards instead of outwards, the numbers are the same.

OP 40Inspect

Enter what SolidCraft shows you. Each value is checked against SolidCraft's own result, within the tolerance shown. Nothing you type leaves this page.

Flat size, first number (across the side walls) ± 0.05 mm mm

Flat size, second number (front wall, hem and back wall) ± 0.05 mm mm

Number of bends exact

Allowance of the hem's bend (bend 5 in the bend table) ± 0.01 mm mm

Show the drawing and bend table

exercise · Steel 1mm · t 1 · R 1 · K 0.4

Flat blank 156.398 × 132.676 mm · 5 bends

Perforation: 92 holes Ø4 mm, staggered, pitch 10 mm.

Bend	Angle	Dir.	R mm	Length mm	Allowance mm
1	90°	up	1	92	2.199
2	90°	up	1	62	2.199
3	90°	up	1	92	2.199
4	90°	up	1	62	2.199
5	180°	down	0.01	96.59	1.288

exercise.solidcraft exercise.json

OP 50Quiz

Q1You want round reliefs at all four corners of the box. What do you do?

Q2Why Unfold before drawing the cable hole?

Q3The hem's bend in the bend table has which angle?