As SLS 3D printing is getting more popular, we share our insights, tips, and tricks for you to use.
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What is refresh rate?
It is the ratio of a minimum amount of fresh powder needed in a mixture of material used in an SLS 3D printer. A lower refresh ratio means better cost-efficiency of the material.
How it works
The amount of needed fresh powder is automatically calculated by our software and shown on the printer screen after the print job is finished. Just add shown amount of material into the mixing cycle of used material and you can start your next job with refreshed material
Sinterit’s Lisa X has allowed us to reduce lead-times and create better solutions — faster, helping us satisfy our customers. We have looked at other 3D printing methods, and other brands, but ultimately decided on SLS and chose Sinterit for their communication, and open material possibility. Something we couldn’t find in other suppliers of affordable entry level SLS printers.
Getting Lisa X solved a lot of our problems. It has a big enough printing area, so we almost always can print big components in one part. It wouldn’t be possible with competitive SLS 3D printing solutions.
The main reason Somfy reached out for the SLS technology from Sinterit was productivity. Printing many pieces in one batch was a game-changer
When we look at Lisa’s line of printers, or Sinterit at general compared to other companies, the two major things that we liked were the materials, that are open source, so we are not locked into one brand […]. We are able to look around the market and use a material that works best for the part.
Contact Sinterit support with your questions.
SLS polyamide powder used for 3D printing is considered particulate matter because of its size. Polyamide powder particles are generally 40 micrometers or smaller. If vacuumed in an ordinary vacuum cleaner, the powder could cause an explosion.
Such materials are subject to labor regulations on air quality and occupational safety. The procedures call for appropriate maintenance of powder at work. Only certified industrial vacuum cleaners should be used to clean such materials. More information about the ATEX Vacuum cleaner can be found here.
Contact Sinterit support with your questions.
It can certainly be said so. PP exhibits excellent chemical resistance, which is why polypropylene components are often found in chemical and pharmaceutical laboratories. Due to its low density, it is a buoyant material, and after use, it can be recycled.
It’s designed for prototyping and low-volume production of PP parts, especially in applications that require chemical resistance, buoyancy, and weldability—such as automotive components, custom lab tools, or pneumatic systems.
This material is compatible with Sinterit Lisa X and Lisa Pro 3D printers.
No, printing with PP powder does not require nitrogen.
It combines excellent chemical resistance, low density (for buoyancy), weldability with other PP parts, and recyclability—making it ideal for both prototyping and functional use.
Yes, it shows great chemical resistance. Detailed resistance data for specific media is available on request.
The refresh ratio is 50%, meaning half of the powder in each new print job should be fresh.
Yes, it has good impact resistance with a Charpy unnotched strength of 30 kJ/m².
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