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Understood. Thanks!

Unless I misunderstand you, I can't replicate that. Try a Line crossing very close to a Reference Point.

I guess that too. I think this is a bug in Alibre. I can't think of any reason for it to be a feature or for the Fixed Constraint to be removed, certainly not for Control Point or Interpolation Point Splines and certainly not without warning. You can also drag the End Node of a Line onto a...

I'd love to see an explanation of this. Is it determined by the solver in 2D DCM or by its implementation in Alibre?

I still don't understand why Extend doesn't need to change the Spline curve yet Trim does (using Spline by Reference Points)...

Indeed, so why does the Fixed Constraint need to be removed for those?

But you can add a Node without changing the shape of the Spline... Edit, I see you can't....

Create a Spline using Reference Points and lock it using a Fixed Constraint. Draw a Line across it. Trim one side of the Line using the Trim Figure tool. What happens? For me, the Fixed Constraint is removed without warning and the trimming of the Line disturbs the shape of the Spline...

Extended

This worked for me, David. It doesn't regenerate with a squared off end until you move the face, though.

Thanks Jim. Interesting to read this: https://help.autodesk.com/view/INVNTOR/2022/ENU/?guid=GUID-7300AC15-E23A-4259-9698-ADCFBFFE7B6C See also: https://www.cadlinecommunity.co.uk/hc/en-us/articles/203174581-Inventor-2016-iLogic-Remove-all-Adaptivity-in-Assembly

I think it needs the implementation of an additional constraint from the D-Cubed 3D DCM https://plm.sw.siemens.com/en-US/plm-components/d-cubed/3d-dcm/

You just need to click Apply once to gain the focus on it, then holding down the Enter key keeps clicking it for you : )

In case anyone wants to try this. You can drag the cam but it only works correctly with Precise Placement. Click the Apply button to gain focus on it and then hold down your Enter key to drive the animation. You can change the speed and also the rotational direction of the cam, whilst it's...

Well done beefy! Works beautifully! If you set the rotation increment to 1 degree, you get a nice smooth animation. I'd completely forgotten that tutorial. There's so much that can be done using Precise Placement. I've never understood why it doesn't get more attention. See also...

To be fair, they have made this commitment in a message received today: 1. We are committed to fair, transparent and affordable pricing, including the perpetual licenses that have made Affinity special. We share a commitment to making design fairer and more accessible. For Canva, this has...

Maxwell was the first render I used (2004). Pity they've never considered the MCAD userbase...

For those who are using Affinity Photo etc. to avoid Adobe subscription, the writing is on the wall too.... https://affinity.serif.com/en-gb/press/newsroom/canva-press-release/

xNurbs plugin for Alibre? Yes please.

Well done!