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Scaling (Bug?)

ronUBLU6
Participant

Scaling (Bug?)

ronUBLU6
Participant
Participant

I needed to enlarge a piece from 1.75" to 1.91". I do the math and get 1.091%... so far so good.

 

In Fusion I go to  scale, select the item and input 1.091%. Finished size is 1.78"

 

I had to scale it to 1.165% to get the size I need.

 

Is it me or is it Fusion?

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g-andresen
Consultant
Consultant

Hi,


@ronUBLU6 wrote:

I needed to enlarge a piece from 1.75" to 1.91". I do the math and get 1.091%... so far so good.

 

In Fusion I go to  scale, select the item and input 1.091%. Finished size is 1.78"

 

I had to scale it to 1.165% to get the size I need.

 

Is it me or is it Fusion?


Scale factor = 1.91/1.75

 

günther

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jhackney1972
Consultant
Consultant

Please attach your model.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

John Hackney, Retired
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ronUBLU6
Participant
Participant
And what your calculator come up with?
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ronUBLU6
Participant
Participant

@g-andresen 

 

Here is a sample

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TheCADWhisperer
Consultant
Consultant

@ronUBLU6 

Why not simply Edit the feature rather than Scale?

Right click and select Edit Feature...

TheCADWhisperer_0-1707584356519.png

 

But Scale should also work (I tested it with your file).

Can you Attach the file where scale returns unexpected result?

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jhackney1972
Consultant
Consultant

Scaling is not the best method to make this body longer.  As the @TheCADWhisperer has mentioned just change the extrusion length.  But if this is just an example of another model, which you did not attach, and you have your heart set on using the Scale command, the video will show you how.  I also show another method of doing it.

 

John Hackney, Retired
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g-andresen
Consultant
Consultant

Hi,

@ronUBLU6  wrote:

And what your calculator come up with?

 

 

Watch the screencast.

 

günther

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ronUBLU6
Participant
Participant

Thanks anyway... But Geesh... I know how to make the a cylinder larger by editing the feature. 

 

That is not the solution to the problem, nor is the model I uploaded is the one that needed to be scaled, just a sample to show how the scaling doesn't work.

 

1.91/1.75=1.091

Now try scaling the model I upload to 1.091 and see what you get.

It won't be 1.91"

 

BTW, the model I'm working on has a lot of embossing and simply rising the height of the cylinder causes it to crash. To get the height I need I need to scale to 1.165, which is mathematically incorrect, but works. 

 

This is a bug in the software

 

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jhackney1972
Consultant
Consultant

Works just fine, non-uniform scale in the Z direction 1.91/1.75. Model is attached.

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ronUBLU6
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Thanks, but the scaling needs to be uniform
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jhackney1972
Consultant
Consultant

It can be but you only were expressing interest in the scaling of the Z direction in your example.  All I am trying to illustrate is the scaling function is working well.

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ronUBLU6
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If you look at my first post I never said anything about the z axis or direction. It seemed to be inferred by others not me
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jhackney1972
Consultant
Consultant

In your first post you wrote what is show below.  The only dimension in your supplied model, the only one you posted, is the length of the cylinder which is the Z direction.  We can only answer to what is given to us by the Forum poster.

 

Scaling Dimension.jpg

Model with Z.jpg

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ronUBLU6
Participant
Participant
I see you convinced yourself that you are right.

The bug still exists.
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TheCADWhisperer
Consultant
Consultant

@ronUBLU6 wrote:

Thanks anyway... But Geesh...

 

1.75/1.91=1.091


@ronUBLU6 
Nope.

You are wrong about this equation 

AND 

you did not attach the “incorrect” scaled file as requested.

 

This isn’t our first rodeo.

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ronUBLU6
Participant
Participant

I'm wrong, my apologies 

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