The image above represents part shrinkage ratio.

To compute for part shrinkage ratio, two essential parameters are needed and these parameters are **mold dimension (D _{M})** and

**part dimension (D**

_{P}).The formula for calculating part shrinkage ratio:

R_{PS} = ^{DM – DP} / _{DM}

Where:

R_{PS} = Part Shrinkage Ratio

D_{M} = Mold Dimension

D_{P} = Part Dimension

Let’s solve an example;

Find the part shrinkage ratio when the mold dimension is 8 and the part dimension is 10.

This implies that;

D_{M} = Mold Dimension = 8

D_{P} = Part Dimension = 10

R_{PS} = ^{DM – DP} / _{DM}

R_{PS} = ^{8 – 10} / _{8}

R_{PS} = ^{-2} / _{8}

R_{PS} = -0.25

Therefore, the **part shrinkage ratio** is **-0.25**.

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the part shrinkage ratio.

To get the answer and workings of the part shrinkage ratio using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Polymer & Textile**** **under **Engineering****.**

Now, Click on **Part Shrinkage Ratio**** **under **Polymer & Textile**

The screenshot below displays the page or activity to enter your values, to get the answer for the part shrinkage ratio according to the respective parameters which are the **mold dimension (D _{M})** and

**part dimension (D**

_{P}).Now, enter the values appropriately and accordingly for the parameters as required by the **mold dimension (D _{M})** is

**8**and

**part dimension (D**is

_{P})**10**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the part shrinkage ratio and presents the formula, workings and steps too.