Design Smarter for Stronger Prints

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Design Smarter for Stronger Prints

Recap from Markforged’s Eiger webinar

For those who could not attend yesterday’s Eiger Techniques webinar, here a brief recap of what was discussed and how you can print smarter with Eiger.

Eiger is the top cloud-based slicing software that just got even better. There are ways for users to maximize their output, save money and cut printing time.  The secret is to know when to add fiber reinforcement for your part, what different types of fiber placement with add the most strength and where the most strength is needed. It’s not complicated to use, in fact Eiger is set up to minimize your designing time and keep production moving along by using programmed settings.

There are different options to choose for your part to add fiber these are isotropic and concentric fill. Concentric fill is a common option with Markforged parts because it provides a constant loop around the inside of the part, it takes less time to print and less materials, while still providing quality strength.  Isotropic fill is time consuming fiber reinforcement, but is dimensionally stronger than concentric at a greater material cost.  This is why it’s ideal to understand the type of strength your part needs, to save materials and the overall cost of the part.

markforged - concentric fill - eiger software - 3d printing

With fiber reinforcement, you can finely tune the type of strength you need even further. There are options that focus on specific walls, areas or holes that require the added strength and these options are: outer shell, inner holes and all walls. Depending on what is required for the part each provides a specific type of fiber rings. The outer shell starts on the outside and adds fiber rings inwards. Inner holes are for reinforcing holes that are in the center of the part and lastly all walls are a combination of the two, it provides rings around the outside walls as well as those in the center.  The rings are only 3 layers deep.

isotropic fill - markforged - 3d printing - software

Isotropic fiber options are either few or many rings, depending on the required strength.   Few rings are a series of rings around the outside of the part that bounds the fiber zig zag fill.  Many rings are often used for more sturdy parts, but with this option it can also cause gaps in the part.  This will be clearer when designing the part in Eiger, as shown in the picture below you will be able to see the gaps.

Other fiber options focus on adding strength to points of stress, using sandwich paneling provides fiber placement to the tops and bottom of the part – rather than throughout the inside.  Shelling is exactly what it sounds like; it adds a type of shell around the outside perimeter of the part. Striping (also known as superimposed sandwich panels) creates layers of the length of the part from the middle of the part to the outsides. Another option which may be essential to some printed parts, but again on the timelier side is full fiber (available in ISO and concentric). It fills the whole part with fiber depending on the option chosen, either in loops or zig-zag patterns.

Other best fiber fill practices are to check the 2D and 3D views of the part as well as the internal view, this will give a full diagnostic of where the fiber will add the strength and remember to limit the usage of fiber.  It’s about printing smart, strong parts to save money and materials.

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