How to scale any project negetively

[gurinderjeetsingh7]

I want to reduce the size of my design but the scale tool not doing it. I can increase the size but can not reduce. it doesn't go down from 1.00 and if I try to reduce it goes down to 0.00 but in red color.

check the image

you can check this picture to understand the problem

[TheCADWhisperer]

Can you type 0.5 in that box.

Can you File>Export and then Attach the *.f3d file here that exhibits this behavior?

Do you see this behavior with any file, or is the behavior specific to this particular file?

[gurinderjeetsingh7]

I can write any value in the box but it will automatically come to 0.00 and I a facing this problem hin more than one design.

I want to reduce the size of this project to 10cm for some reason & attached it. can you help me with this? and I will delete the attached file after some time because it's very important and private.

Thankyou so much.

[TheCADWhisperer]

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@gurinderjeetsingh7 wrote:

... I am facing this problem in more than one design.

... I will delete the attached file after some time because it's very important and private.

---

In that case you should have simply Attached a dummy file that exhibits the behavior rather than proprietary data.

[TheCADWhisperer]

I noticed a mixture of solid bodies and surface bodies. 

It is not clear to me exactly which body you intended to scale (I suspect the answer is, "All of them.")

You could do this with a bit of STEP or IGES trickery - but I am not sure of your true Design Intent.

[gurinderjeetsingh7]

I have to shrink the whole design. Can you please reduce the size of this design to 10 cm, in any way but without harming the shape and propotions. I will be very thankful to you.

[TheCADWhisperer]

What is your goal with this project?

Why was it not modeled to desired size?

With my technique for scaling - all history will be lost.

[gurinderjeetsingh7]

It was designed at the desiered size. But my friend want to 3d print the design. So thats why it should be of 10cm. I dont care about history, i just want to shrink this design to 10 cm. Thankyou for helping me alot

[chrisplyler · Accepted solution]

I'm not a 3D printer. So experience at all. But I'm surprised that your friend's 3D printing software doesn't allow scaling natively.

[gurinderjeetsingh7]

I dont know anything about that my friend. He just asked mrle to resize it.

And other than that why i am unable to resize my model

[chrisplyler]

I don't know how to resize your model.

Tell your friend, "No." Tell him there is 3D printer software out there, like Cura for example, that will let him scale stuff on his end before he prints it. If he wants to print your design, he has to figure it out.

[jeff_strater]

As indicated above, use the Scale command.  If the value is below 1.0, it is a "negative" scale, meaning that the body will get smaller.  There is no way to say "I want this to be 10cm", so you will have to apply scale factors iteratively, until the object is the right size.

[chrisplyler]

Jeff, that info might be the thread's solution.

Do you mean that one must enter the negative inverse of the fraction they want? For example, to achieve a 0.5 scale, one must enter -2 ???

[jeff_strater]

Sorry, I was not clear enough - the other way around.  If you want to scale by 1/2, enter 0.5 as the scale factor.  Negative numbers are disallowed in the Scale command.

[chrisplyler]

Okay, that's what I would have assumed. Then the OP's problem is not solved. He claims he is unable to successfully enter a 0.X value.

[TheCADWhisperer]

I would have provided solution except that most of the bodies are surface bodies. Not clear to me how the OP intended to print surface bodies (no thickness).