topic Re: Dynamic 3D Block in Dynamic Blocks Forum

Dynamic 3D Block

stacero — Tue, 16 Jan 2024 16:24:02 GMT

Hello everyone,
I have a problem with creating a dynamic 3d block. The problem is the following, I need to create a stretch of the block, normally if the block is rectangular I have no problem, but in this block I have some faces that are curved. I have tried different ways to stretch them, but it always distorts them or simply does not stretch them. Any idea or possible solution will be very welcome.
I attach the block file.

Re: Dynamic 3D Block

j.palmeL29YX — Wed, 17 Jan 2024 03:57:26 GMT

Dynamic blocks are designed for 2D only, point.

Sometimes we can outwit AutoCAD. But before we must know what you want to achieve. "Stretch" - in which direction. Show us an example how the block should look after stretching.

Re: Dynamic 3D Block

Ed__Jobe — Wed, 17 Jan 2024 04:14:55 GMT

I recreated the block with a fully constrained sketch.

Re: Dynamic 3D Block

stacero — Wed, 17 Jan 2024 14:37:55 GMT

Thanks Ed. In fact, I also created a 2d with a similar solution. However, my problem right now is creating it in 3D. And that works similar at least in length.

Re: Dynamic 3D Block

stacero — Wed, 17 Jan 2024 14:40:35 GMT

The idea is that it works in a similar way to this 3D block. This is a block of a rectangular solid that you can stretch.

In this one I had no problem doing it, but in this one the problem is the curves.

Re: Dynamic 3D Block

j.palmeL29YX — Wed, 17 Jan 2024 17:28:23 GMT

For demonstrating I use the block which was posted by @Ed__Jobe .

(view in My Videos)

Re: Dynamic 3D Block

Ed__Jobe — Wed, 17 Jan 2024 17:34:46 GMT

@stacero wrote:

In this one I had no problem doing it, but in this one the problem is the curves.

You have to constrain the curves so that they can only vary by their center point. Plus, in your original one, you didn't use curves to define the edges. You used a polyline with a lot of points.

Re: Dynamic 3D Block

stacero — Wed, 17 Jan 2024 18:23:37 GMT

Thank you guys!! This solve completely my issue.

Re: Dynamic 3D Block

Ed__Jobe — Wed, 17 Jan 2024 21:06:43 GMT

I edited it so that you can adjust the Length, Height and Thickness in the Custom Properties panel. Select it to edit the properties.

Re: Dynamic 3D Block

j.palmeL29YX — Thu, 18 Jan 2024 13:50:01 GMT

Attached a completely other strategy to drive the dimensions of the Base- (2D) Sketch, here using constraints.

At the block References test_1 you can change beside the Length and Height also the Thickness as shown by @Ed__Jobe and additional the Radius of the arcs too (both in the properties panel).

But that has nothing to do with the main question, how to manipulate 3D objects in Dynamic Blocks. I did that only for fun and to demonstrate the power of dynamic blocks with Parametric constraints, even if the practical use of such dynamic 3D blocks is very limited.

Have fun while testing ...

Re: Dynamic 3D Block

rsalastopografia — Tue, 27 Feb 2024 00:05:27 GMT

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Re: Dynamic 3D Block

j.palmeL29YX — Tue, 27 Feb 2024 05:24:12 GMT

What is your question? At which point do you have problems?

If you're completely new in using constraints (and if your question is related to this) I'd suggest to start a new thread.