[ololobus]

I think this is true under assumption that you know the CAD tool well. From my recent experience (I have a 3D printer), I regularly find myself in a situation where I know what I want to do, I can do measurements and I can make a sketch on a paper. Yet, making it a proper 3D model in something like FreeCAD is super tedious. I know OpenSCAD relatively well, but when it comes to something more complex I struggle a lot. The recent example, I was making a water tap for Lego duplo kitchen sink for my little one :)

So I would really appreciate a good AI/LLM tool that I can feed my sketch and parameters and it can save me hours of searching web and watching tutorials on how to extrude a circle over a curve

BTW, any existing AI tools work really well with OpenSCAD, so if you want a parametrized model that can be made out of simple shapes, I highly recommend this flow

[mk_stjames]

Your comment on how you feel trying to execute a model is similar to the inverse of how many Mechanical Engineers (used to) talk about coding - they know what they want, they can write down what they want a program to do, they just don't know what to type out in a programming language or how to compile the code or use the IDE, etc etc.

There are mechanical engineers out there who can literally model objects nearly as fast and they can 'think' about the layout of said object. If you look at the complexity of, say, a CAD model from a real, highly complex aluminum casting section of an automotive subframe, or the living-room-sized cross-fuselage spar forging of a fighter aircraft, with hundreds of ribs and fillets and features- and compare that to the simple model you are trying to make in OpenSCAD, you should quickly realize the parallels in difficulty you are trying to express (similar to the person without knowledge of C++ or Python watching someone be able to build applications by typing code from their fingertips as if they already knew what to type...)

You are struggling for a few reasons- 1., it is a knowledge hurdle of an entire field you are trying to surmount- again, go watch someone actually model a real, complex part and watch the speed, they can do so in a tool like Solidworks, CATIA, NX, etc... at a rate that is far different because they have experience that it can honestly take even good people years to accumulate - and 2. they are using professional tools - you mention OpenSCAD, like it is CAD, but it isn't. It is programmatic mesh generation, and it turns out that programmatically typing out how to generate complex things is much more difficult than a combination of a graphical GUI and graph-based generator that all big CAD programs figured out starting in the 1980s. If those tools you use were really the best way to make complex models 'paramaterized', then why do we design our fighter jets, Formula 1 cars, or Space X rockets in Dassault's CATIA or Siemen's NX ?

You want a LLM to take a sketch to your CAD, but what I'm saying is, there are people out there that can skip the sketch and build the CAD as fast as you can likely hand draw the first sketch, and these are skills you can actually learn, but you may just be using the wrong tools and have not had the practice necessary.

[8note]

as a mech who then did a cs degree, openscad is the brainfuck of cad

like its purposefully built to be unusable

[johnvanommen]

> So I would really appreciate a good AI/LLM tool that I can feed my sketch and parameters and it can save me hours of searching web and watching tutorials on how to extrude a circle over a curve

I think this is possible, but the ‘trick’ would be translating your instructions in English into some kind of language that the CAD software understands.

I’m on a bunch of 3D printing forums, and everyone tries to describe what the finished product would LOOK like. They end up making PICTURES when what they really want is a STL file.

Two dimensions are easier to visualize then three, so let’s put it this way:

If you wanted to turn “English” into “a 2D image that’s dimensionally accurate”, you’d want to translate from “English” to “SVG.”

SVG is dimensionally accurate. JPG isn’t. The file format itself has no concept of “dimensions” only “pixels.”

[gwbas1c]

I've resorted to using Rust + vcad, although I think I'll give OpenSCAD a spin.

I haven't tried telling AI to "make a thing," but I'm able to get Co-pilot to refactor code. It's just the geometry that makes my head spin.

[hadlock]

I've been having excellent success with prompts like "use cadquery and build x" for moderately simple stuff, like bearing clearance gauge for 3d prints. I don't like openscad because while it will technically produce .step , they don't import "clean" into fusion, etc the way step files produced by cadquery do

[andyfilms1]

If you use something like OnShape or Fusion, you could easily get comfortable enough to model those parts in about a day. Once get the hang of it, you'll be amazed how fast you can work.

It will take much longer than a day for AI to get to this level, so there's not much to lose by just learning how to use the software now :)