But I am just going to put this here so the general thoughts incorporate a fundamental problem before significant labor investments go too far:

What is a probable, viable, possible answer to the geometry kernel problem?

Parasolid, arguably the leader and generally most capable geometry kernel we have today, is or at least I can't see past...

...is just not something easily duplicated.

There are a bazillion man months of time in that body of code. And those are hard hours!

For those unfamiliar, the geometry kernel is the piece that resolves geometry cases to make operations possible. Imagine a cylinder and rectangle. Now imagine they have some common volume. They intersect, in other words.

Put a fillet on one edge to blend the edge.

How many literal edge and corner cases can you come up with?

There are way more than you think!

Now multiply that tiny problem space with all the geometry used every day.

And then multiple that time again by what it takes to make it robust.

And the whole thing, as it stand today is not even multi-threaded!

Any CAD that we expect to see even moderate general use in a professional sense, needs this piece.

How do we, meaning anyone interested in CAD this way, get past this?

I wish there were some OSS type license for Parasolid. It could be treated like the Linux kernel.

Whatever replaces Parasolid and friends, should be treated like the Linux kernel.

The closest we have is Open Cascade.

Sorry. I do not want to piss on a good vision. But this has to be said.

Peace and good luck!

I used voice input on this. Pleqse forgive typos.