#freecad — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #freecad, aggregated by home.social.
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Rapid prototyping.
I quickly knocked up v5a of my lens hood/light baffle design (loop for attaching a thread, telescope interface wall 3 perimeters thick instead of 2, but 3 mm long instead of 5, opening half angle increased from 2.3° to 2.4°), printed it on my Prusa Mini+, and put it on the telescope by the time the night was about half over.
I'm pretty happy with the design but it did expose the issues with relying on a push fit. Despite being designed with the exact same outer diameter as my previous lens hoods this one (and only this one) was too loose, and was going to fall out when the telescope moved. An emergency application of a single strip of masking tape on the interface surface to tighten it up may just be enough to keep it in place for tonight, but I'll need to investigate more tomorrow.
I may be partly due to my printer producing a smoother surface than the previous prints that suffered from cold conditions, but I suspect it was actually the shortening by 2 mm that is the main problem. Now that I think about it I recall there being a fine moulding line or seam between parts a few mm inside the aperture. My previous lens hood might have been relying on that for grip, and the new one doesn't quite reach it. I can tweak the dimensions to try to get the perfect fit but I really should find a way to use the magnets instead.
#Seestar #SeestarS30Pro #3Dprinting #FreeCAD #SmartTelescope #TMMT #ThirtyMillimetreTelescope
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Damn. I forgot I broke another of my v5 25° 3D printed Seestar lens hood/light baffles on Tuesday night so tonight the Thirty Millimetre Telescope is wearing the ludicrously large v5 20° design.
These things are getting broken at the end of the night when the Seestar automatically closes the telescope arm, bending the push-fit lens hood out of the aperture and causing it to drop onto the concrete patio below.
The weak point is where the narrow cylindrical section that fits inside the Seestar aperture meets the top of the conical section. The walls are as thin as I can make them at that point because any additional thickness right there intrudes on the telescope beam, losing light. Compounding the issues are the fact that these are printed in matte black PLA which is rather brittle, and they were printed when it was very cold inside the house wasn't doing the layer adhesion any favours.
I don't know whether they're breaking when the telescope is forcing them out of its aperture or when they hit the ground. For now I can reduce the length of the cylindrical section to reduce the moment arm when it gets nudged out and add a loop so I can tie a safety harness to the lens hood to stop it dropping all the way to the ground.
Longer term I can try printing them in tougher filament (I have a spool of PETG-CF I bought for this purpose, but need to swap out my brass nozzle for hardened steel first) and switch to magnetic attachment instead of a push fit.
For tonight I'll just turn off the automatic closing function of the Seestar, I don't think the bigger, heavier 20° hood will survive the fall to the ground. As long as I bring the telescope inside in the morning before the Sun can shine into it that'll be fine.
#Seestar #SeestarS30Pro #3Dprinting #FreeCAD #SmartTelescope #TMMT #ThirtyMillimetreTelescope
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I got the dimensions of the USB-C jack wrong the first time … :eyeroll: But now everything fits fine. The PCB is held exactly in place by the top lid.
For such #3dprinting projects I like those self-tapering screws for plastics. Once installed in my #velomobile with the right lengthened wires, electronics and speaker enclosures will be closed (the later one w/ glue).
Making enclosures and lids fit was easy w/ binders (offset -0.1mm) in #FreeCAD.
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… from master sketch to main part of the enclosure.
I just started the 3D printer to check if my tolerances fit the electronic component(s).
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… from master sketch to main part of the enclosure.
I just started the 3D printer to check if my tolerances fit the electronic component(s).
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… from master sketch to main part of the enclosure.
I just started the 3D printer to check if my tolerances fit the electronic component(s).
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… from master sketch to main part of the enclosure.
I just started the 3D printer to check if my tolerances fit the electronic component(s).
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… from master sketch to main part of the enclosure.
I just started the 3D printer to check if my tolerances fit the electronic component(s).
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Open source tools like FreeCAD are okay for quick sketches, but the transition from traditional CAD is often overrated. The flexibility is there, but the workflow feels clunky compared to what I used for my projects in Kyiv. Most people push it for the price, but for a real architect, the logic of the space matters more than the software license. It is a tool, not a solution for better design.
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Open source tools like FreeCAD are okay for quick sketches, but the transition from traditional CAD is often overrated. The flexibility is there, but the workflow feels clunky compared to what I used for my projects in Kyiv. Most people push it for the price, but for a real architect, the logic of the space matters more than the software license. It is a tool, not a solution for better design.
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Open source tools like FreeCAD are okay for quick sketches, but the transition from traditional CAD is often overrated. The flexibility is there, but the workflow feels clunky compared to what I used for my projects in Kyiv. Most people push it for the price, but for a real architect, the logic of the space matters more than the software license. It is a tool, not a solution for better design.
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#FreeCAD people, I need to make many pockets with the same shape. They have to be positioned in specific coplanar positions and orientations that have to be set up with constraints.
What's the best way to do this? I don't want to have unrelated duplicates: editing one sketch should update all pockets.
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#FreeCAD people, I need to make many pockets with the same shape. They have to be positioned in specific coplanar positions and orientations that have to be set up with constraints.
What's the best way to do this? I don't want to have unrelated duplicates: editing one sketch should update all pockets.
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#FreeCAD people, I need to make many pockets with the same shape. They have to be positioned in specific coplanar positions and orientations that have to be set up with constraints.
What's the best way to do this? I don't want to have unrelated duplicates: editing one sketch should update all pockets.
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#FreeCAD people, I need to make many pockets with the same shape. They have to be positioned in specific coplanar positions and orientations that have to be set up with constraints.
What's the best way to do this? I don't want to have unrelated duplicates: editing one sketch should update all pockets.
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@christopherkunz
#FreeCAD This App evolves really fast.
See also the new Design for Manufacturing (DFM) Workbench.Tutorials: https://wiki.freecad.org/Tutorials
Video Tutorials: https://wiki.freecad.org/Video_tutorials -
@christopherkunz
#FreeCAD This App evolves really fast.
See also the new Design for Manufacturing (DFM) Workbench.Tutorials: https://wiki.freecad.org/Tutorials
Video Tutorials: https://wiki.freecad.org/Video_tutorials -
@christopherkunz
#FreeCAD This App evolves really fast.
See also the new Design for Manufacturing (DFM) Workbench.Tutorials: https://wiki.freecad.org/Tutorials
Video Tutorials: https://wiki.freecad.org/Video_tutorials -
@christopherkunz
#FreeCAD This App evolves really fast.
See also the new Design for Manufacturing (DFM) Workbench.Tutorials: https://wiki.freecad.org/Tutorials
Video Tutorials: https://wiki.freecad.org/Video_tutorials -
@christopherkunz
#FreeCAD This App evolves really fast.
See also the new Design for Manufacturing (DFM) Workbench.Tutorials: https://wiki.freecad.org/Tutorials
Video Tutorials: https://wiki.freecad.org/Video_tutorials -
I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.
Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG
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I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.
Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG
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I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.
Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG
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I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.
Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG
-
I released this full set of Roadshow/Funhouse gears last year. I'm glad to see they are still in good shape after a year. I also have the original prototype that just has the middle gear and that's in one piece too.
Links:
Middle gear: https://www.printables.com/model/1226708-funhouse-road-show-animatronic-head-jaw-gear-03-84
Sector gear: https://www.printables.com/model/1241735-funhouse-road-show-animatronic-head-sector-gear-03Middle gear was made with #openscad, the sector gear with #freecad, printed of PETG
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I ♥️ tidy master sketches in #FreeCAD
I use a PartDesign Body as a container for the master sketches. This makes using binders w/ offsets easier. The "X-ed" rectangles stand for off-the-shelf electronics parts.
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I ♥️ tidy master sketches in #FreeCAD
I use a PartDesign Body as a container for the master sketches. This makes using binders w/ offsets easier. The "X-ed" rectangles stand for off-the-shelf electronics parts.
-
I ♥️ tidy master sketches in #FreeCAD
I use a PartDesign Body as a container for the master sketches. This makes using binders w/ offsets easier. The "X-ed" rectangles stand for off-the-shelf electronics parts.
-
I ♥️ tidy master sketches in #FreeCAD
I use a PartDesign Body as a container for the master sketches. This makes using binders w/ offsets easier. The "X-ed" rectangles stand for off-the-shelf electronics parts.
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RE: https://social.freecad.org/@freecad/117235682534967966
I'm so impressed with this and so pleased to write it up... yet I understand so little about EM?High frequency stuff! Awesome that #FreeCAD can have these things developed in the community though. Proper power of #opensource
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RE: https://social.freecad.org/@freecad/117235682534967966
I'm so impressed with this and so pleased to write it up... yet I understand so little about EM?High frequency stuff! Awesome that #FreeCAD can have these things developed in the community though. Proper power of #opensource
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RE: https://social.freecad.org/@freecad/117235682534967966
I'm so impressed with this and so pleased to write it up... yet I understand so little about EM?High frequency stuff! Awesome that #FreeCAD can have these things developed in the community though. Proper power of #opensource
-
RE: https://social.freecad.org/@freecad/117235682534967966
I'm so impressed with this and so pleased to write it up... yet I understand so little about EM?High frequency stuff! Awesome that #FreeCAD can have these things developed in the community though. Proper power of #opensource
-
RE: https://social.freecad.org/@freecad/117235682534967966
I'm so impressed with this and so pleased to write it up... yet I understand so little about EM?High frequency stuff! Awesome that #FreeCAD can have these things developed in the community though. Proper power of #opensource
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Spotted: A new Microwave Workbench
Over on our FreeCAD Mastodon account, under our regular #FreeCADFriday hashtag we get to spot all manner of things....
https://blog.freecad.org/2026/09/08/spotted-a-new-microwave-workbench/
#FreeCAD #Workbench #Community #Microwave #HighFrequency cc @mishkathebear
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Spotted: A new Microwave Workbench
Over on our FreeCAD Mastodon account, under our regular #FreeCADFriday hashtag we get to spot all manner of things....
https://blog.freecad.org/2026/09/08/spotted-a-new-microwave-workbench/
#FreeCAD #Workbench #Community #Microwave #HighFrequency cc @mishkathebear
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Spotted: A new Microwave Workbench
Over on our FreeCAD Mastodon account, under our regular #FreeCADFriday hashtag we get to spot all manner of things....
https://blog.freecad.org/2026/09/08/spotted-a-new-microwave-workbench/
#FreeCAD #Workbench #Community #Microwave #HighFrequency cc @mishkathebear
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Spotted: A new Microwave Workbench
Over on our FreeCAD Mastodon account, under our regular #FreeCADFriday hashtag we get to spot all manner of things....
https://blog.freecad.org/2026/09/08/spotted-a-new-microwave-workbench/
#FreeCAD #Workbench #Community #Microwave #HighFrequency cc @mishkathebear
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Spotted: A new Microwave Workbench
Over on our FreeCAD Mastodon account, under our regular #FreeCADFriday hashtag we get to spot all manner of things....
https://blog.freecad.org/2026/09/08/spotted-a-new-microwave-workbench/
#FreeCAD #Workbench #Community #Microwave #HighFrequency cc @mishkathebear
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Is it worth taxing what I have left for brain cells to learn #freecad for my #woodworking hobby..?
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Is it worth taxing what I have left for brain cells to learn #freecad for my #woodworking hobby..?
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Is it worth taxing what I have left for brain cells to learn #freecad for my #woodworking hobby..?
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Is it worth taxing what I have left for brain cells to learn #freecad for my #woodworking hobby..?
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Is it worth taxing what I have left for brain cells to learn #freecad for my #woodworking hobby..?
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Moved them to the front face. Now to add some sexy fillets and fire up the printer.
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Moved them to the front face. Now to add some sexy fillets and fire up the printer.
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Moved them to the front face. Now to add some sexy fillets and fire up the printer.
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Moved them to the front face. Now to add some sexy fillets and fire up the printer.
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Moved them to the front face. Now to add some sexy fillets and fire up the printer.