File size after derive

[karol_eremusMQ5XL]

Hi,

I would like to ask you guys for help. A file size I would like to derive is 1143kb but ipart with derived part "weight" 55000kb. Could someone explain how it is possible?

[ampster40]

Assembly files (.iam) only contain shortcuts or links to all the part files used to make up that assembly, that is why the file size of your assy is smaller than the part file.

[karol_eremusMQ5XL]

The problem is that  the size of ipart is bigger about 50 times that iam. I can not figure out why.

[JDMather]

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@karol_eremusMQ5XL wrote:

I can not figure out why.

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Forget the size of the *.iam file for a moment.

Add up the file sizes of ALL of the *.ipt files that make up the assembly. Each and every one.

What do you get for the total of ALL of the *.ipt files?

[kacper.suchomski]

@JDMather & @ampster40  are right, but I see that you do not fully understand the scheme, so I will try to bring the analogy closer.

Imagine that you have a movie on your computer that weighs 1 GB, or at least a pdf book that takes up 10 MB.
There are shortcuts to these files on your desktop. How much does an abbreviation weigh? 1kB?

Assembly in Inventor works similarly. The assembly file only describes the references and relationships between the individual component files. But itself does not contain information about geometry and much more.
Assembly - references (shortcuts) and relations; part - geometry.

[ampster40]

In case this discussion heads there, iPart file size may not be something you can compare to just a plain .ipt part file size also due to how iParts work.  There are parent files and there are children files.

Sorry to confuse you if this doesn't pertain to what you are questioning, just suspect it may come into play.

[johnsonshiue]

Hi Karol,

I agree with experts' explanation. There is a slight possibility that the file could be corrupted. Please share the files in zip here. I can help use our internal debug tool to tell if the file size is reasonable and what contribute to the 55MB.

If the files cannot be shared, there is a simple test to tell if the file size is reasonable. Simply open the assembly and export it to SAT or SMT. Then open the 55MB derived part and also export it to SAT or SMT. Compare the two file sizes. Are they similar? Or the one exported from the assembly is much smaller?

Many thanks!

[JDMather]

@karol_eremusMQ5XL 

I requested the number from an equation.

*.ipt1+*.ipt2+ ... = ?  What is this total?

[karol_eremusMQ5XL]

Thanks guys for help.