Problems with Loft, Properties of Bodies and Scallop

[karlheinzstoeber]

Dear Fusions,

I would like to report a few problems with Fusion and hope that they can be fixed in a timely manner:

Loft creates full body even though only profiles are selected

This problem existed already a year or two ago. With yesterday's update, it's back. Although two profiles are selected, a full body is created. The problem can be bypassed by first creating the body and then cutting it. However, the behavior is cumbersome and does not correspond to the described functioning.

 

Body properties display incorrect values for the Bounding Box

The width of the body shown in the following picture is 4 mm. However, the dialog shows  9.75 mm. For other similar bodies in this project, also 4 mm wide, different width values are also displayed.

 

Scallop ignores Bottom Height when Machine Areas Using Boundaries is turned on

According to Manual, Bottom Height is a limit value that must not be lowered. If the Machine Areas Using Boundaries option is turned on, this is not the case. The undershooting of the limit value can also be seen in the G-code.

Machine Areas Using Boundaries turned off

Machine Areas Using Boundaries turned on

[g-andresen]

Hi,

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@karlheinzstoeber wrote:

Loft creates full body even though only profiles are selected

This problem existed already a year or two ago.

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Creating a solid loft with a ring , for example, has never been possible before.

You always had to take the detour via cutting.

günther

[karlheinzstoeber]

Dear Günter,

thank you for your reply. I don't know if I understood you right. I've selected two rings and the loft created is a solid. To create the body I want, additional cutting is nessesary. I'm absolutly sure that the behavior has changed over time, because I need such bodies very often.

Regards Karlheinz

[g-andresen]

Hi Karlheinz,

Until now, it was definitely the case that 2 loft processes were necessary for such "rings".
1. loft 1 > total body
2. loft 2 > inner body > "cut" option

Günther

[karlheinzstoeber]

Dear Günther,

maybe you are right. But if this is the case, this behavior is limited to rings or other closed forms. See following open form where loft works as expected.

Best regards

Karlheinz

[TrippyLighting]

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@karlheinzstoeber wrote:

... this behavior is limited to rings or other closed forms.

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Correct! Has always been the case!

The bounding box behavior has been reported a number of times but I am not sure it's been recognized as a bug. @jeff_strater could you look at this?

[jeff_strater]

correct on all fronts.  The behavior with closed profiles has always been there, and is likely to continue to exist for a while.  We'd like to fix it some day, but because there is a workaround, TBH, it is pretty far down on the list.

Regarding the bounding box, the properties here don't guarantee the tightest bounding box possible.  It's really meant to be an approximation, just to give you a sense of generally how big the component is.

[karlheinzstoeber]

Thank you all.

@JeffStrater: I think you're joking. The difference between the true value and the one shown in my example is more than 200%.

The Manufacture Workspace (Setup->Stock->Relative Size Box) shows that the values of the Bounding Box can also be determined very precisely.  Maybe the design team should talk to the manufacture team. A good solution is already implemented in Fusion.