Joint problem

[ericschimel]

Hi all. I'm doing some modeling of a parametric table and I'm having a problem with making a joint. You'll see in this screen cast that the top can change width and depth depending on a couple of variables. I've got that part down. What I'm having trouble with are the skirts of the table "sticking" to the top as I change it's size. I've tried several different kinds of joints to no avail... Can anyone help? See my screencast for a better description..

https://knowledge.autodesk.com/community/screencast/71347904-9415-4b30-99ae-f507d94f7c65

[ericschimel]

Hi all. I'm doing some modeling of a parametric table and I'm having a problem with making a joint. You'll see in this screen cast that the top can change width and depth depending on a couple of variables. I've got that part down. What I'm having trouble with are the skirts of the table "sticking" to the top as I change it's size. I've tried several different kinds of joints to no avail... Can anyone help? See my screencast for a better description..

https://knowledge.autodesk.com/community/screencast/71347904-9415-4b30-99ae-f507d94f7c65

[jeff_strater · Accepted solution]

Hi @ericschimel,

Yeah, the problem here is really as-built joint.  What this joint type does is to use the positions of the geometry at the time the joint is created to infer the joint relationship.  This works really well in cases where you've design the components "in place".  But, the problem with these joints is that they are not based on geometry, just position.  So, if the geometry changes, as you've seen, the joint is not associative to the geometry.

So, you should probably use "regular" joints.  Here is a screencast showing how to do that, using a very crude approximation of your table.

Jeff

[jeff_strater · Accepted solution]

Hi @ericschimel,

Yeah, the problem here is really as-built joint.  What this joint type does is to use the positions of the geometry at the time the joint is created to infer the joint relationship.  This works really well in cases where you've design the components "in place".  But, the problem with these joints is that they are not based on geometry, just position.  So, if the geometry changes, as you've seen, the joint is not associative to the geometry.

So, you should probably use "regular" joints.  Here is a screencast showing how to do that, using a very crude approximation of your table.

Jeff

[innovatenate]

Have you tried using regular joints (not as-built) joints to assemble the 3 components? 

Here's a screencast showing a simplifed example:

https://knowledge.autodesk.com/community/screencast/d46abc49-9c23-490d-ab2f-45586d9f93b5

I hope that helps! Let us know if you have any questions.

Thanks,

[innovatenate]

Have you tried using regular joints (not as-built) joints to assemble the 3 components? 

Here's a screencast showing a simplifed example:

https://knowledge.autodesk.com/community/screencast/d46abc49-9c23-490d-ab2f-45586d9f93b5

I hope that helps! Let us know if you have any questions.

Thanks,

[ericschimel]

That was exactly what I needed. Thanks so much!

[ericschimel]

That was exactly what I needed. Thanks so much!