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FreeCAD

Hey! It's once again! Feel free to show us your projects!

Feb 28, 2025, 10:30 AM·Public·Tusky
7boosts·10favorites
Public
Tinx

Hey @FreeCAD!

Today I want to show y'all how easy it is to create smooth vase-like structures in #FreeCAD!

I created a replacement part for an old #IKEA ceiling lamp. See alt texts for details!

Step 1: Draw a B-spline curve that resembles half of the cross section of the intended structure. This screenshot shows a line that starts left of the coordinate origin and grows smoothly upward and to the left. There is a saddle point somewhere near the first third that will later hold a part of the original lamp. The line is not closed.
Step 2: Select the sketch and in the Part workbench, select Part > 2D Offset… I used Mode: Pipe, Join type: Arc, and left both Intersection and Fill offset unchecked. The chosen offset defines half of the wall thickness. The screenshot shows a 2D line that is drawn around and closely follows the initial sketch. It is now a closed line with a defined thickness.
Step 3: In the Part workbench, select the Offset2D we created in the last step and then select Part > Revolve… I used the following parameters: Center at (0, 0, 0), direction (0, 0, 1), angle at 360°, Symmetric angle: unchecked, Create Solid: checked. The screenshot now shows the solid 3D structure that closely resembles a vase. However, the bottom is open because the result is a replacement lamp shade.
#FreeCADFriday#3Dprint#Repair
Public
Tinx

You can find my #FreeCAD file on #Thingyverse and here there are some real-world photos of the part.

thingiverse.com/thing:6964410

The lamp with a broken shade. The lamp is made up of three glass parts that are layered similar to an abstract blossom. One large saucer is on top, a smaller one below hangs awkwardly on the broken inner vase-like part. The LED bulb is in tact.
Close-up of the broken vase and the smaller saucer on a white background.
The replacement part is shot mid-print. One can see organic/tree structures supporting the saddle. The print is circa two-thirds complete.
The repaired ceiling lamp. The broken part has been replaced and all is well.
Public
Tinx

While I was at it, I implemented a configurable ceiling junction box using @OpenSCAD.

thingiverse.com/thing:6964496

The photo shows a 3D-printed junction box. A spring collected from an empty nasal spray is used to keep the cable taut after the box is screwed onto the ceiling.
#OpenSCAD#3Dprint#DIY
Quiet public
Wiltur

@tinx
How do you manage to offset and close the first Iine ?
@FreeCAD

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