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15-Moonstone
November 28, 2017
Question

mold shrinkage value

  • November 28, 2017
  • 3 replies
  • 8353 views

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

3 replies

1-Visitor
November 28, 2017

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.

asifcad15-MoonstoneAuthor
15-Moonstone
November 28, 2017
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.....
1-Visitor
November 28, 2017

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.

21-Topaz II
November 28, 2017

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?

21-Topaz II
November 28, 2017

@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.