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this post was submitted on 12 Aug 2023
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Asklemmy
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I wonder, what makes a good CAD system?
I had this idea for a while to build a Frankenstein monster of a 3D software that uses real time graphics and has a multi step build process covering CAD, wireframe manipulation and voxel workflows. If I ever actually make it, your concerns will be heard despite being probably not the best softwsre to do your work in :)
CAD system must be reliable. It is simply unacceptable to have math issues which cause unpredictable geometries.
CAD system should have a good UI. This is a big issue for open source software in general as UI and UX is usually an afterthought.
CAD system should be fast and use hardware acceleration. Running single threaded python scripts on CPU to do complex computations kills the productivity. Designing real life objects is already a mentally taxing task, the whole purpose of CAD is to remove the computational bottleneck of a human.
CAD should be object aware. If I draw two gears and put them next to each other, I should be able to rotate one and see the other moving accordingly.
This is a bare minimum, I'm not even talking about computational modelling, stress testing, etc.
Proper math and an intuitive interface, the opensource alternatives really struggle with some basic functions
Modern day, proper parametric modeling with robust and intuitive constraints.
That is a question too hard to answer in a comment and one that depends on the use case of the software. Few users need the power and features of CATIA or NX, but those who need it can't accept anything lesser. SolidWorks is a good spot in terms of flexibility and features if it could be easier for the average person to use. You need proper accurate parametric modeling (e.g. a NURBS kernel) for solid models and surfacing. Hearing things like wireframe and voxel indicates it isn't suitable to me.