I thought I would knock some dust off my drafting skills after a small chat with @captain_aggravated@sh.itjust.works

Seeing this image on the tutorial made me realize, FreeCAD seems to be a Technical Geometry Super-Suite. It makes sense that CAD would grow to include all of these things. But I thought sharing the initial perspective of some one who hasn’t looked at this stuff in about 18 years might be interesting.

Granted I’m not actually familiar with most of this stuff, and none of it from the POV of FreeCAD. If this can deliver 10% of what I’m looking at, I’m in for a treat.

5 points

Great piece of software, but still nowhere near the beauty of PicoCAD

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4 points

I have a thing for experimental CAD and modeling softwares, but hadn’t heard of PicoCAD! I’ll have to try it out, thanks for sharing.

Some other cools ones:

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2 points
*
Deleted by creator
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9 points

I don’t mean to poo poo FreeCAD the way I say this, but the vast majority of those features listed are bog-standard cad suite features at least by modern standards.

I’d love to see a FOSS cad suite kill my personal dependency on proprietary solutions, but as best I’m aware the UX is still hugely lacking.

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6 points

Does FreeCAD handle aerodynamics? A decade ago I wanted to screw around with low-speed airfoils, and couldn’t find any better indications than ‘OpenFOAM and good luck.’

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28 points

From my perspective the biggest thing wrong with FreeCAD is that it’s a single threaded app in a multicore world. If you load large stuff, the app freezes and one core is working really hard for a while.

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3 points

No, it’s the topological naming problem. End of.

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5 points

That doesn’t have me wait for tens of minutes while one core slogs it’s guts out and the other fifteen sit there idle.

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5 points

Solidworks is the same way.

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3 points

Can’t say I’m surprised.

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2 points

Isn’t like every CAD program single core? People got scammed hard with Xeon in the past. CAD PC salesmen had/have absolutely no idea what they were talking about

Biggest speedup has been the GPU integration. The single core stuff doesn’t seem to matter much anymore.

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-1 points

Mastercam does pretty well once you force it to use hardware accelleration

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9 points
*

Can it export STL/3MF without making all the circles low poly yet?

Last time I tried it freecad was not usable for 3d printing because it doesn’t export properly.

With the naming bug that still exists too I found it basically unusable even for basic parts. It feels like going back 20 years compared to fusion 360.

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1 point

Last time I tried freecad, the geometry solver was incorrect, so it would sometimes create two (or more) shapes from a fully constrained part. Since learning about openSCAD, I’ve seen no reason to give it another try.

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1 point

Yes, I’ve 3d printed circles from freecad without issue. There are some precision options when converting to a mesh. I always set them to the tolerances of my 3d printer.

Overall, it still has a lot of rough edges though.

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1 point

When I tried it like 7-8 years ago it crashed pretty much every time I touched a constraint. Was I probably doing something very wrong? Yes, but that made it pretty impossible to learn. Opposed to Fusion360 which just yells at you when you do dumb shit.

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4 points

Sounds like it was only five years behind SolidWorks. The CAD program with one level of Undo, an unreliable Revert option, and active hostility toward incremental saves. It was great for machining because every change was about as permanent and slicing up actual metal.

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1 point

The CAD program with one level of Undo, an unreliable Revert option, and active hostility toward incremental saves.

I don’t know the first thing about CAD, but lmao.

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3 points
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STL is a total abnormally and a piece of shit of a format that doesn’t actually represent 3D objects very well and has a ton of issues when it comes to sharing. Unfortunately we’re stuck with this shit format and Autodesk with their Tinkercad seems to want to keep pushing it because as long as we use this crappy format we’re forced into sharing and collaborating inside their platform - that at some point might require a subscription.

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4 points
*

Completely agree about STL, however, I cannot for the life of me understand why 3MF isn’t a binary format.

It has all these big tech companies behind it, and they landed on incredibly short sighted mistake of making the format human readable, instead of providing good tools for reading and modifying the binary format.

Compressing the human readable content is fine for reducing storage size. But de/serializing the XML is going to be at least 3 orders of magnitude slower. Given a sufficiently large file, the difference would be waiting 30 seconds, vs a barely noticeable 0.3 seconds.

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0 points

What isn’t variant of XML these days? I know, it’s bad but it’s what it is.

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5 points

I’ve used it for making models for 3D printing for about 5 years, never seen that issue

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1 point

Strange, when I looked it up at the time there were a bunch of suggestions for defaults to change and stuff to try and solve it.

You can print circles and not have them come out with flat faces instead of an actual circle?

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1 point

Have you tried using the mesh workbench rather than just exporting as STL?

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1 point

Yes. I just did a few days ago actually. Made some 4 mm diameter washers, they look perfectly round.

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4 points

So I guess it’s only an arc and not a full circle, but I had no problem making this curved sanding block in FreeCAD.

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2 points
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2 points

I noticed a similar problem importing step files… I no longer had circles, I had nonagons… I would love to delete my windows vm that only exists for fusion 360.

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3 points

If you are comfortable with all your models being available for download and some wonky Terms of Use that may let random internet people profit off your designs but not you, then OnShape in a full-screen browser feels about as good as F360 does. I guess you could also pay for it, but despite finding it pretty nice, I am iffy about paying Solid Edge prices for something browser based. I understand SolidWorks has slapped together a browser version as well, but nobody likes it.

Linux wise, there’s just not much outside FreeCAD and SolveSpace. BricsCAD is an okay evolution of AutoCAD, and VariCAD is a less good one.

I may have done a longer writeup than anybody needed the other day.

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1 point

I have tried out onshape and it is a pretty functional fusion replacement, but I really don’t like the idea that the models I make can be used (or even just sold) by others commercially. I’d be okay with it if the free version just gave all models made with it an open license that barred commercial use entirely, but banned for me and open for sale by others is pretty dirty imo.

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