Polisher for 3D Printed Objects

About: I am Mateo Milicevic and I live in Dugo Selo (small town near the Croatian capital city - Zagreb). I am a student of the Mechanical Engineering School of Faust Vrancic and I have 17 years. I like to make thi...

A common problem with 3D printing is that the surface of the object is often rough and there are traces of plastic being applied layer by layer.

Step 1: Introduction

How to solve this problem?

Materials such as ABS (often used in 3D printing) are degradable in acetone, so if we leave it for a short while in acetone steam, the surface of the object will begin to smoothing.

What are the results?

The surface of the object becomes nicer, there are no traces of 3D printing and you get items that look like they are professional made on a professional plastic casting machine.

Why is ABS disintegrating in acetone?

ABS plastic consists of three major components (Acrylonitrile Butadiene Styrene). Solvents that have a similar organic structure can help break down, the components of the plastic. Acetone acts as a polar protic solvent that can generally solvate a wide variety of polymers.

Can we dispose other materials by using acetone?

Each material behaves in its own way in acetone. Some will disintegrate, some will just soften. If you are using another plastic, you need to find a liquid that will break down that kind of plastic you use.

What solvents work best for 3D printed plastics?

ABS: Acetone

Acrylic: Most Solvents

PLA: MEK or 'MEK Substitute'

PVA: Water

PVC: Most Solvents

Nylon: Pretty solvent resistant

Are solvents harmful to our body?

Of course, it is recommended that you close the lid tightly when working, and after opening, do not inhale direct steam.

Step 2: Machine Working

The aquarium air pump blows air into acetone which then evaporates and via the tube comes in the container where our 3D print object is located.



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