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15-Moonstone
Nov 28, 2017 11:45 AM UTC
Question

mold shrinkage value

Can't understand how do I put these shrinkage value(see jpeg) on my model.. please any one guide me...0.0050cm/cm
....or 0.0050in/in...????what does it mean

Regards
Asif

10 replies

1-Visitor
Nov 28, 2017 3:02 PM UTC

Asif, have you tried the following?

 

Step 1: Open the model of the part that you are tryinig to apply shrinkage to.

Step 2: Click the file drop down tab, scroll down to "Prepare" then clock "Model Properties".

Step 3: Under the "Tools" catagory you will see the value Shrinkage and all the way to the right there is a link that says "change".

Step 4: Once you click on change, you will be allowed to apply shrinkage by either scaling, or by dimension.

 

I hope this helped, best of luck

 

regards, Ben.

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asifcad15-MoonstoneAuthor
15-Moonstone
Nov 28, 2017 6:53 PM UTC
Thanks Ben for your reply.... I know how to use shrinkage dialogue box in creo..but what confusing me is the value which I take from metweb..of that plastic...as 0.0050cm/cm.or
0.005in/in....if I work in millimeters...then what should I have to put in shrinkage column.....
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1-Visitor
Nov 28, 2017 6:59 PM UTC

I would say if you are using millimeters it would be a safe bet to use .050 mm, which would be the same as .005cm.

 

Usually I use shrinkage by scaling when working with molded parts.

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KenFarley
21-Topaz II
Nov 28, 2017 6:03 PM UTC

Are you asking what the shrinkage values mean in terms of the physics behind it? Basic concepts? Or are you asking how we'd use those values to build a model for a mold?

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21-Topaz II
Nov 28, 2017 9:01 PM UTC

@asifcad wrote:
Can't understand how do I put these shrinkage value(see jpeg) on my model.. please any one guide me...0.0050cm/cm
....or 0.0050in/in...????what does it mean

Regards
Asif

Mold shrinkage is a ratio, the units don't matter.  Notice that the value is the same, 0.005, for both metric and English.  It's 0.005 inches of shrinkage per 1 inch or 0.005 cm per 1 cm.  The same would be true of mm or km or yards or whatever.  

 

What it is saying is that it shrinks 1/2 of one percent. In other words, for each 1 unit of length it will shrink 0.005 units.

 

 

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