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3 Tips for Stronger 3D Printed Parts

by:Tuowei     2019-06-10

Depending on the intended use case for 3D parts, structural integrity may be a key factor.

This can be an issue to make sure your product doesn't crash when it's in use, or even to ensure user security.

We will take a lovely Wacom Penholder as an example to point out the different considerations and precautions taken to ensure the structural integrity in 3D printing.

If you are using your own 3D printer, this will help you understand the best settings to use.

If you order 3D printing online, this will give you a better understanding of the different technologies and materials available for powerful 3D printing, as well as the content to communicate with suppliers.

For this product, the artist's Wacom pen will be inserted into the pen hole with a force applied down.

What can we do to make sure the pen is long?

Here are 3 things to note: The thing that is rarely considered is the direction of the layer.

Since the force will drop to the Pen Bar, it makes sense to print your layers horizontally.

But if the force on your print comes in from any angle other than the side, below, or straight down, we get an effect called shear.

Most engineers are already familiar with the term, but for designers, think of it as a deck;

They won't give in if you press down from the top, but if you press down from the side, the deck will crack.

The same concept can be applied to 3D printing: Cards are like layers of 3D printing that make up a solid object and exert more force.

If you are working with a 3D printing vendor, the main thing here is to make sure you explain the intended use case for the part so that the operator can choose the best direction to build.

Another factor that guarantees better structural integrity is the density of 3D printing.

In the software of each FDM printer, there is usually a fill density option;

The software for these printers will automatically know to print the filament pattern in your model.

When the default setting is 20%, your fill density will fill your model with a small amount of filaments.

This design provides stability while reducing printing time and material costs.

However, the percentage of fill density can be increased if structural integrity is a key feature of the project.

By simply increasing the fill density by 10%, you can see that the Viking Wacom Penholder will be printed as a stronger, heavier object.

If we jump to SLA printers (such as table 1), these printers automatically fill all the geometry with resin.

To save time and material costs, many people 'empty' their models before printing, but since we want to improve structural integrity, filling the entire geometry with resin is a good choice.

If you really decide to empty your model, the minimum wall thickness of VeroWhite 3mm is a good start.

One of the most important considerations for 3D parts with reasonable structure is material selection.

Here are 3 powerful 3D printing options: If you want to use materials other than plastic resin or want to produce 1 or more products, you can consider other manufacturing techniques including: in the second picture above, you can see that the final pen bar design is made of metal.

3 Tips for Stronger 3D Printed Parts

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