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Just about finished the next iteration of a wing design in @freecad Next job is to begin to consider fuselage ideas. This is going to be a 4 channel fixed wing with around 1.3 metre wingspan. I'm calling it #Sinistral #UAV #FreeCAD #HardcoreSaturdayNight!
Screencapture of FreeCAD rotating a wing assembly, different sections of the wing are visible and you can see cuts for spars and a vee cut for aileron sections. The wing tips are set at a 15 degree dihedral.
@freecad Since the mount for a bike light didn't fit on an aero handlebar, a 3D-printed solution had to be designed.
Already tested (printed in PETG). 👍
Top view of the Aero handlebars, with the bike light and its mount for round handlebar tubes next to them.
FreeCAD model of a mount for attaching a bicycle light to a mount for a bike computer (e.g., Garmin devices)
Close-up of the bike light attached to the 3D-printed mount, which is in turn attached to the bike computer mount.
Photo of the aero handlebars with lights mounted on the bike computer mount, which is screwed to the underside of the handlebars.
Just about finished the next iteration of a wing design in @freecad Next job is to begin to consider fuselage ideas. This is going to be a 4 channel fixed wing with around 1.3 metre wingspan. I'm calling it #Sinistral #UAV #FreeCAD #HardcoreSaturdayNight!
Screencapture of FreeCAD rotating a wing assembly, different sections of the wing are visible and you can see cuts for spars and a vee cut for aileron sections. The wing tips are set at a 15 degree dihedral.
@freecad Since the mount for a bike light didn't fit on an aero handlebar, a 3D-printed solution had to be designed.
Already tested (printed in PETG). 👍
Top view of the Aero handlebars, with the bike light and its mount for round handlebar tubes next to them.
FreeCAD model of a mount for attaching a bicycle light to a mount for a bike computer (e.g., Garmin devices)
Close-up of the bike light attached to the 3D-printed mount, which is in turn attached to the bike computer mount.
Photo of the aero handlebars with lights mounted on the bike computer mount, which is screwed to the underside of the handlebars.
It's #FreeCADFriday! Show us what you've been working on with #FreeCAD recently. #CAD
OS: macOS 27.0.1 Architecture: arm64 Version: 26.3.0RC2.20261018 (Git shallow) Build date: 2026/10/18 05:49:18 Build type: Release Branch: (HEAD detached at 9fb16e7f9) Hash: 9fb16e7f981adb09f7d7f130ce085d68e9825358 Python 3.13.15, Qt 6.11.2, Coin 4.0.10 (bundled), Pivy 0.6.11 (bundled), Vtk 9.7.0, boost 1_90, Eigen3 5.0.1, PySide 6.11.2 shiboken 6.11.2, xerces-c 3.3.0, Clipper2 2.0.1, IfcOpenShell 0.8.5, OCC 8.0.1 Locale: English/Germany (en_DE) Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/ QPA/File dialog/Color dialog: cocoa/via Qt/via Qt Navigation Style/Orbit Style/Rotation Mode: CAD/Trackball/Drag at cursor Logical DPI/Physical DPI/Pixel Ratio: 72/114/2 OpenGL version/vendor/renderer: 2.1 Metal - 91.7/Apple/Apple M3 Max Installed mods: * Curves workbench 0.6.71 * Fasteners Workbench 0.5.44 * freecad.gears workbench 1.3.0
OS: macOS 27.0.1 Architecture: arm64 Version: 26.3.0RC2.20261018 (Git shallow) Build date: 2026/10/18 05:49:18 Build type: Release Branch: (HEAD detached at 9fb16e7f9) Hash: 9fb16e7f981adb09f7d7f130ce085d68e9825358 Python 3.13.15, Qt 6.11.2, Coin 4.0.10 (bundled), Pivy 0.6.11 (bundled), Vtk 9.7.0, boost 1_90, Eigen3 5.0.1, PySide 6.11.2 shiboken 6.11.2, xerces-c 3.3.0, Clipper2 2.0.1, IfcOpenShell 0.8.5, OCC 8.0.1 Locale: English/Germany (en_DE) Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/ QPA/File dialog/Color dialog: cocoa/via Qt/via Qt Navigation Style/Orbit Style/Rotation Mode: CAD/Trackball/Drag at cursor Logical DPI/Physical DPI/Pixel Ratio: 72/114/2 OpenGL version/vendor/renderer: 2.1 Metal - 91.7/Apple/Apple M3 Max Installed mods: * Curves workbench 0.6.71 * Fasteners Workbench 0.5.44 * freecad.gears workbench 1.3.0
FreeCAD 26.3 Release Candidate 2
Hot on the heels of the first release candidate last week we are pleased to announce that builds for RC2 are now available.
#CAD #FreeCAD #Opensource #CAM #BIM
https://blog.freecad.org/2026/10/18/freecad-26-3-release-candidate-2/
blog.freecad.org
Hot on the heels of the first release candidate last week we are pleased to announce that builds for 26.3 Release Candidate 2 (RC2) are now available. RC2 contains fixes from RC1 including those bl…
@f4grx @freecad This is disappointing. I was just learning #freecad for 3D print models coming from #onshape.
LLMs are pushed heavily at my work. They seem productive but all it does is push the bottleneck to reviewers, who now have the burden of making sense of slop. You're in a situation where you're tempted and pushed to ship faster: read less, skim more, and just approve. The LLMs are great at adding lines of code, but every line is liability, they miss obvious bigger picture abstractions.
Things _will_ slip by, you're facing cognitive bias no one can completely overcome. Please reconsider.
A little late for #FreeCADFriday but here's what I designed and printed this week:
A magnetic holder, to keep my sunglasses safe in the car.
My car has a (disguised) metal plate hidden beside the steering wheel - so you can add your own magnetic flair.
A sunglasses holder. It's a cube shape with a cutout in the center that matches the shape of the nose part of my sunglasses.
The reverse of the holder shows mounting holes for the magnets.
You can see how I modeled the cutout for the nose section here:
This was by far the hardest part. I attempted to "pad" the area out multiple times but was hit with the dreaded "wire not closed" error.
In the end I drew an inverse shape and used "pocket" to remove material.
A simple sketch overlayed on the drawing, showing how material was removed from the cube shape to model the nose portion of the sunglasses.
Here’s the finished, 3D printed product!
This thing is seriously sturdy.
I had previously printed a similar version from makerworld but it wasn’t strong enough to hold my glasses, and if you drive over a speed bump - the sun glasses were dropped to the floor!
3D printed sunglasses holder, mounted in my car.
3D printed sunglasses holder, mounted in my car.
I'm fascinated by #PiDP11 software, looking forward to buy the proper hardware.
For now I built myself a case, modeled in #FreeCAD around STEP-files of a #RaspberryPi and a 7" HDMI display. The design is inspired by #DEC #VT100 terminals common in the late '70s.
The thing hangs on the door of a cabinet in my office, it will be degraded to a simple monitor as soon as I get the #PiDP case. It has a similar size and will hang at the same door.
@freecad #FreeCADFriday
Fake VT100 terminal.
Terminal modeled in FreeCAD.
STEP models inside the case.
Hey! It's #FreeCADFriday! What are you wonderful people working on with #FreeCAD this week? #CAD
I'm fascinated by #PiDP11 software, looking forward to buy the proper hardware.
For now I built myself a case, modeled in #FreeCAD around STEP-files of a #RaspberryPi and a 7" HDMI display. The design is inspired by #DEC #VT100 terminals common in the late '70s.
The thing hangs on the door of a cabinet in my office, it will be degraded to a simple monitor as soon as I get the #PiDP case. It has a similar size and will hang at the same door.
@freecad #FreeCADFriday
Fake VT100 terminal.
Terminal modeled in FreeCAD.
STEP models inside the case.
@freecad @fosdem See the issue I submitted here:
https://github.com/FreeCAD/FreeCAD-Homepage/issues/361
github.com
Observed: When visiting the website for FreeCAD and the Wiki. The host resolves to an IPv4 only address. Also checking the website address via MX toolbox and https://internet.nl/test-site/ It now o...
@freecad
I just read the release notes for the new #freecad release 26.3. Awesome work.
https://wiki.freecad.org/Release_notes_26.3
Free CAD のスケッチから SVG にするのどうするんだっけな #FreeCAD
Here’s the finished, 3D printed product!
This thing is seriously sturdy.
I had previously printed a similar version from makerworld but it wasn’t strong enough to hold my glasses, and if you drive over a speed bump - the sun glasses were dropped to the floor!
3D printed sunglasses holder, mounted in my car.
3D printed sunglasses holder, mounted in my car.
linear pattern の mode を range にしたときの length ってどこの長さだ？ #FreeCAD
@freecad Version 4 which operates very smoothly as a precise 3D print. The design goal here was to create a small 3D printable mechanism with the largest opening hole size for the total diameter of the mechanism. The central opening here is 34mm diameter with the external diameter of the opened petals being 56mm. I also wanted a mechanism where the opening remained approximately circular for any degree of opening. #FreeCAD #3dprinting
Iris rear side, petals open.
Iris rear side, petals closed.
You can see how I modeled the cutout for the nose section here:
This was by far the hardest part. I attempted to "pad" the area out multiple times but was hit with the dreaded "wire not closed" error.
In the end I drew an inverse shape and used "pocket" to remove material.
A simple sketch overlayed on the drawing, showing how material was removed from the cube shape to model the nose portion of the sunglasses.
A little late for #FreeCADFriday but here's what I designed and printed this week:
A magnetic holder, to keep my sunglasses safe in the car.
My car has a (disguised) metal plate hidden beside the steering wheel - so you can add your own magnetic flair.
A sunglasses holder. It's a cube shape with a cutout in the center that matches the shape of the nose part of my sunglasses.
The reverse of the holder shows mounting holes for the magnets.
This nearly broke me, and definitely broke FreeCAD multiple times, but I have made a working iris, animated in the assembly workbench. #FreeCADfriday #3dprinting #FreeCAD
An 8 petal iris mechanism modelled in FreeCAD 1.1.4
3D printed working iris prototype.
This nearly broke me, and definitely broke FreeCAD multiple times, but I have made a working iris, animated in the assembly workbench. #FreeCADfriday #3dprinting #FreeCAD
An 8 petal iris mechanism modelled in FreeCAD 1.1.4
3D printed working iris prototype.
@freecad
Now that the navigation light fits and works on my Alpha W9 #velomobile, I take this #FreeCADfriday to build a taller (more than twice as high) and somewhat sturdier version for the Strada Velomobile. I do this in #FreeCAD 26.3.0RC1, which works fine so far.
(Though I very much hope, issue #32955 will make it into 26.3 release.)
Screenshot FreeCAD with the model of the light's foot. I need to add height between the binders (used for an additive loft) and the upper pad "Rand". So all binders will get an additional offset and a pad is added between loft and "Rand". (At least that's my 1st plan … LOL)
Navigation light "PosLi-P" on my Alpha velomobile in the garage, photo taken from across the street. Strada velomobile on the right side will get an adapted "XT" version of PosLi-P.
close-up of PosLi-P on the velomobile scoop – does not sit perfect because it is only sticked temporarily (and the wires are thicker than the double sided sticky tape)
mirror したやつを linear pattern するのどうやるんだ #FreeCAD
@freecad
Now that the navigation light fits and works on my Alpha W9 #velomobile, I take this #FreeCADfriday to build a taller (more than twice as high) and somewhat sturdier version for the Strada Velomobile. I do this in #FreeCAD 26.3.0RC1, which works fine so far.
(Though I very much hope, issue #32955 will make it into 26.3 release.)
Screenshot FreeCAD with the model of the light's foot. I need to add height between the binders (used for an additive loft) and the upper pad "Rand". So all binders will get an additional offset and a pad is added between loft and "Rand". (At least that's my 1st plan … LOL)
Navigation light "PosLi-P" on my Alpha velomobile in the garage, photo taken from across the street. Strada velomobile on the right side will get an adapted "XT" version of PosLi-P.
close-up of PosLi-P on the velomobile scoop – does not sit perfect because it is only sticked temporarily (and the wires are thicker than the double sided sticky tape)
スケッチを繰り返すのどうするんだろう #FreeCAD
なんでや wire 閉じとるやろがい #FreeCAD
I nearly lost my mind when they said I can reference external geometry without first bringing it into the sketch.
A bunch of wins coming in @FreeCAD 26.3
youtube.com
FreeCAD 26.3 CR has been released, and it introduces more than just a collection of new features.This is the first FreeCAD release to use the new versioning ...
It's #FreeCADFriday and in case you didn't notice we announced the 26.3 release candidate! As ever post what you are working on with #FreeCAD but huge extra kudos if you are testing 26.3 RC1! https://blog.freecad.org/2026/10/08/freecad-26-3-release-candidate-1/
blog.freecad.org
The FreeCAD team has just announced the first release candidate for FreeCAD 26.3. If you've been waiting to get your hands on new features and help by reporting bugs, this is a great time to start.…
Every year at #Christmas, my father-in-law builds a very large nativity scene with antique figurines in his #church. The figurines have wooden joints, some broken over the years.
He asked if I could 3D-print replacement parts.
Modeling them in #FreeCAD went quickly, printing them took significantly longer.
#FreeCADFriday @freecad
"Grandpa needs ten of these from the 3D-printer."
Quick model in FreeCAD.
Part of the nativity scene, a few years ago. The whole setup is larger than my living room.
Every year at #Christmas, my father-in-law builds a very large nativity scene with antique figurines in his #church. The figurines have wooden joints, some broken over the years.
He asked if I could 3D-print replacement parts.
Modeling them in #FreeCAD went quickly, printing them took significantly longer.
#FreeCADFriday @freecad
"Grandpa needs ten of these from the 3D-printer."
Quick model in FreeCAD.
Part of the nativity scene, a few years ago. The whole setup is larger than my living room.
I nearly lost my mind when they said I can reference external geometry without first bringing it into the sketch.
A bunch of wins coming in @FreeCAD 26.3
youtube.com
FreeCAD 26.3 CR has been released, and it introduces more than just a collection of new features.This is the first FreeCAD release to use the new versioning ...
@freecad
Design and #3dprinting of last week's #FreeCADfriday project is done. The wire stranding machine is now working. 🥳
made w/ #FreeCAD
A printed enclosure that looks a bit like american mailboxes (those sitting on wooden posts) held down by a table clamp. The pin pushing the power switch can be pulled with a string (or as for demonstration a shoe lace). The machine has an indicator LED, as it's sound and motion wasn't good enough … lol. The geared motor has a flat flange attached to which up to 4 thin wires can be fixed to twist them.
rear view inside the machine: power jack, motor, micro switch
@freecad @concretedog @[email protected]
Detail of the battery compartment housing for standard alkali AAAs of my "Tinta" electronic door sign project.
https://makertube.net/w/orzQwgzjfX5VL8X9vJdUoV
The view is rendered by a macro straight out of the FreeCAD document.
crowdsupply.com
An open-source ePaper sign that runs for over a year on alkaline batteries and installs anywhere
@freecad @concretedog @[email protected]
Detail of the battery compartment housing for standard alkali AAAs of my "Tinta" electronic door sign project.
https://makertube.net/w/orzQwgzjfX5VL8X9vJdUoV
The view is rendered by a macro straight out of the FreeCAD document.
crowdsupply.com
An open-source ePaper sign that runs for over a year on alkaline batteries and installs anywhere
@freecad
Design and #3dprinting of last week's #FreeCADfriday project is done. The wire stranding machine is now working. 🥳
made w/ #FreeCAD
A printed enclosure that looks a bit like american mailboxes (those sitting on wooden posts) held down by a table clamp. The pin pushing the power switch can be pulled with a string (or as for demonstration a shoe lace). The machine has an indicator LED, as it's sound and motion wasn't good enough … lol. The geared motor has a flat flange attached to which up to 4 thin wires can be fixed to twist them.
rear view inside the machine: power jack, motor, micro switch
It's #FreeCADFriday! Our intrepid @concretedog however is out helping the @FLOSSK crew run #SFK26 an #opensource conference in Kosovo today, so there will be delays in boosting your FreeCADFriday toots... however, with that said, show us what you are working on with #FreeCAD!
This week, yet another guitar bridge.
The base part of the bridge needs to fit perfectly the arched guitar top.
The CAD model of the bottom part of an archtop guitar bridge, with the toolpath for the CNC machining.
The ebony bridge of an archtop guitar.
@freecad
Me: "I need a **simple** plate to hold a geared motor with a table clamp (for mounting tools)."
Also me: see screenshot. 😹 (description in ALT text)
Happy #FreeCADfriday everyone!
ScreenShot FreeCAD: a full enclosure for that geared motor; including indicator LED; 12 V power jack; micro switch with an activator pin that can be pulled with a string. – This machine is for stranding wires, so I will be up to 3 meters away from it when I need it to stop immediately. (this is still work in progress)
This week, yet another guitar bridge.
The base part of the bridge needs to fit perfectly the arched guitar top.
The CAD model of the bottom part of an archtop guitar bridge, with the toolpath for the CNC machining.
The ebony bridge of an archtop guitar.
@freecad
Me: "I need a **simple** plate to hold a geared motor with a table clamp (for mounting tools)."
Also me: see screenshot. 😹 (description in ALT text)
Happy #FreeCADfriday everyone!
ScreenShot FreeCAD: a full enclosure for that geared motor; including indicator LED; 12 V power jack; micro switch with an activator pin that can be pulled with a string. – This machine is for stranding wires, so I will be up to 3 meters away from it when I need it to stop immediately. (this is still work in progress)
It's #FreeCADFriday! Woohoo! Hope everyone is doing OK. Show us what you've been working on with #FreeCAD this week! #CAD
Mac の #FreeCAD でファイルを開こうとしているが、ダイアログが閉じた後何も起こらない……？
@freecad The case of my "Tinta" project, in real life and rendered in FreeCAD.
https://makertube.net/w/py2Ksudw3uoV8KFXFK72cZ
The exploded view is rendered by a macro straight out of the FreeCAD document, labels included.
github.com
Battery-powered e-paper sign: room signage, sensor graphs, home automation, or anything over Wi-Fi. Wakes by real-time clock, NFC tap, or button. Raspberry Pi Pico W firmware, custom PCB, and 3D-pr...
@freecad This #freecadfriday is the right time to check out my new #FreeCAD swag 😎
Edit: added links
https://blog.freecad.org/2026/09/11/freecad-swag-shop-now-open/
A black hoody and a black shirt. The hoody has a FreeCAD logo and small text. The shirt has a bigger logo with text and a big FreeCAD graphic.
Tutorial: Lofting between Parts with Facebinders
The Draft Workbench has an interesting tool called Facebinder which can be used to perform actions like lofting or extruding from faces rather than from sketch geometry or wires....
#CAD #Opensource #design #tutorial #freecad
https://blog.freecad.org/2026/09/21/tutorial-lofting-between-parts-with-facebinders/
blog.freecad.org
The Draft Workbench has an interesting tool called Facebinder which can be used to perform actions like lofting or extruding from faces rather than from sketch geometry or wires. Whilst a somewhat …
@freecad This #freecadfriday is the right time to check out my new #FreeCAD swag 😎
Edit: added links
https://blog.freecad.org/2026/09/11/freecad-swag-shop-now-open/
A black hoody and a black shirt. The hoody has a FreeCAD logo and small text. The shirt has a bigger logo with text and a big FreeCAD graphic.
@freecad The case of my "Tinta" project, in real life and rendered in FreeCAD.
https://makertube.net/w/py2Ksudw3uoV8KFXFK72cZ
The exploded view is rendered by a macro straight out of the FreeCAD document, labels included.
github.com
Battery-powered e-paper sign: room signage, sensor graphs, home automation, or anything over Wi-Fi. Wakes by real-time clock, NFC tap, or button. Raspberry Pi Pico W firmware, custom PCB, and 3D-pr...
It's #FreeCADFriday! Hope you wonderful people have an amazing weekend. In the meantime, what are you all working on with #FreeCAD? #CAD
FreeCAD Version 1.1 Released
After an enormous amount of work and dedication from FreeCAD contributors we are delighted to announce that FreeCAD Version 1.1 is now released and available for download. There are significant amounts of improvements and new features.
https://blog.freecad.org/2026/03/25/freecad-version-1-1-released/
blog.freecad.org
After an enormous amount of work and dedication from FreeCAD contributors we are delighted to announce that FreeCAD Version 1.1 is now released and available for download. There are significant amo…
Hurrah! #SOURCE issue 3 is out now! There's a focus on #openhardware for this issue with tutorials on the wonderful @FreeCAD , the mighty @kicad , the fabulous @inkscape and also getting your project certified by the brilliant @oshwassociation. As ever it's pay as you feel, links are on this post https://concretedog.blogspot.com/2025/10/source-issue-3-out-now-open-hardware.html #CAD #CAM #PCB #KiCad #FreeCAD #Inkscape #FreeCadFriday #opensource
Please Boost! and have a great weekend. X
The cover of issue 3 of SOURCE magazine. The cover has a diagonal image across the centre with a stack of purple PCB's which are the output of one of the tutorials in the magazine. There is some green text describing the magazine content.
KLAXXON! #SOURCE issue 2 is now available for download! In case you don't know what I am on about SOURCE is my attempt at an #opensource "pay what you feel" magazine. In this issue we look at #Godot, #Inkscape, #OpenStreetMap #Logseq #Termux and #Syncthing
There's a little more info and a direct to pdf link on my blog as well as links to Issue 1 which was a deep dive on Computational Fluid Dynamics with #FreeCAD.
https://concretedog.blogspot.com/2025/07/source-issue-2-out-now.html
Please Boost!
A cover image for SOURCE Issue 2. The heading and some text are in magenta with a black background. Diagonally across the middle is a complex looking graph which is a screenshot from Logseq. The bottom left corner has a triangle of text which contains info about the magazine content.
Something for the weekend? I'm super pleased to have just blogged with the 1st issue of #SOURCE. SOURCE is an idea for where to place articles I'd like to write but that are to difficult for my brilliant paid clients to home. SOURCE is opensource, free (pay as you feel) and I'd LOVE it if you shared my first experimental issue on Computational Fluid Dynamics with @FreeCAD that's on this blog. Ta.
#opensource #FreeCAD #newsletter #decentralise
https://concretedog.blogspot.com/2025/05/source-issue-1-out-now-computational.html
A magazine style cover. Diagonally across the middle is an image from a CFD simulation of a Ballute parachute in a virtual wind tunnel created in FreeCAD and post processed in the opensource Paraview. The magazine/newsletter is called SOURCE and there are text details listing the issue number, the month and year as well as a line about how the contents are covering Computational Fluid Dynamics.
