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PA12 Smooth v2 with lower refresh ratio: new standards in SLS powders refreshing

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If we can describe what drives cost-efficiency of SLS 3D printing it could be done in two words: refresh and pack. Today we introduce the lower refresh ratio of our PA12 powder. The extreme 26% was achieved.

There are a lot of myths around SLS 3D printing. Some people still think that it is an expensive technology. But since Sinterit introduced small SLS 3D printers but with comparable quality and precision as the industrial machines, the expensiveness of the process is not a problem anymore.

– The total cost of using the machine is the purchase of equipment, service, and material. We’ve just improved this third parameter, by lowering the amount of powder in the refreshing cycle. We’ve already revolutionized the cost of the system and service, now it’s time for reducing the cost of printing. – says Konrad Głowacki, co-founder of Sinterit responsible for powder development.


For those who are not familiar with SLS 3D printing technology, let’s explain the basics. SLS operation principle is powder sintering with the help of infrared laser in elevated temperature which helps the grains of the powder to consolidate before being bound with the laser beam. In the conventional SLS printer, there is a so-called “bed” on which the roller spreads a thin layer of powder followed by sintering according to the layers sliced from a 3D model file (e.g. a .stl file (derived from CAD-like designing software).

Why powder refreshing ratio is so important?

What is important: not all the powder is sintered during the process. Only the part which builds the object. The rest of it works as a natural support. The unsintered powder can be reused in other prints just after adding some fresh powder.


The needed amount of the additional refreshing powder is responsible for the final costs of 3D printing in this technology. As you can easily assume, the lowest ratio of refreshing powder means the best ROI. Sinterit was always a leader in this aspect, but now the company lowered it even more to 26 percent.

Huge amounts, so cost efficiency is key.  Optimal model arrangement in the print volume, combined with a low refresh ratio, allow to get a low printing cost. This is the best way for SLS usage, especially when it comes to production.

– Our way is to make 3D printing technology more accessible. Lowering the cost of prints is just the next step. Not the last. – says Maxime Polesello – CEO of Sinterit.

New 6 kg packages for the most commonly used powders

powders new packaging

To optimize the workflow and reduce the amount of waste, we have introduced new packaging of the most commonly used powders: PA12 Smooth, PA11 Onyx, Flexa Grey. It is also compatible with the whole solution and accessories.

Now you can buy them in 6kg steel eco-friendly containers that are compatible with Sinterit Solution accessories like ATEX Vacuum Cleaner and Sieve. The old 2 kg bottles are also available.

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