Parametric design & design intent with Onshape

emagdalenaC2i

This is a simple part that I use in the Onshape's trainings to explain parametric design & design intention. I hope you enjoy it ;-)

https://youtu.be/kz2FBAV4w6I

konstantin_shiriazdanov

one of the powerfull capabilities of OS is that it allows the degeneration of the geometry, you can have a line of zero length in a sketch, you can transform a cube to a sphere only varying fillet radius and no additional edges will stay and so on

emagdalenaC2i

Yes, We also use that in the Full Round Fillet https://forum.onshape.com/discussion/6905/new-featurescript-full-round-fillet

Actually, now that we get variable fillets I think we should edit this FeatureScript ;-)

billy2

What can you build with only 3 features? Now we know.

Great video, thanks for sharing.

emagdalenaC2i

That's the point of that sample. I can change the part to be a tube, a bullet, a rectangular plate, a circular plate, a full sphere a hollow sphere... almost all that you want

Hakro

Thanks for that great video.

3dcad

konstantin_shiriazdanov said:

one of the powerfull capabilities of OS is that it allows the degeneration of the geometry, you can have a line of zero length in a sketch, you can transform a cube to a sphere only varying fillet radius and no additional edges will stay and so on

Going back from zero distance doesn't always come up as desired (as it was before set to 0). I suppose Onshape has hard time to determine right direction if lenght/distance grows from zero to something. There should be some sort of mind reader implented but this is propably already in works so I don't raise an IR ticket for it

konstantin_shiriazdanov

3dcad said:

Going back from zero distance doesn't always come up as desired (as it was before set to 0). I suppose Onshape has hard time to determine right direction if lenght/distance grows from zero to something. There should be some sort of mind reader implented but this is propably already in works so I don't raise an IR ticket for it

sometimes I use dimensions that change their value from positive to negative crossing zero value, and  OS remembers positive direction of dimension, I haven't faced any ambiguity of this behavior. for us this can really look like mind-reading