---
title: That's it!
slug: thats-it
step: 11
howto: make-plaster-moulds-for-large-products
tags: ["product","injection","extrusion","mould"]
category: Moulds
difficulty: Medium
time: < 1 week
location: 
---
# Step 11: That's it!
This technique, though somewhat time-consuming, offers a straightforward approach to mold-making. It is not a substitute for machined molds but serves well in prototyping larger and more organic shapes. Here is the final product: a stool crafted from old polypropylene chairs, showcasing the vast potential of this method.

An aspect to consider is the contrast between the plastics used in the extruder. In this example, the color choices were similar, resulting in minimal contrast. This element can be adjusted to achieve the desired appearance.
![michael-makes-stool-1.jpg](/resources/howtos/make-plaster-moulds-for-large-products/michael-makes-stool-1.jpg)
![michael-makes-stool-2.jpg](/resources/howtos/make-plaster-moulds-for-large-products/michael-makes-stool-2.jpg)