Sinterit Sinterit PBT Optimal SLS Powder (6kg)

SINTERIT PBT OPTIMAL

HIGH DETAIL AND STIFFNESS

The most economical materials per-print available on the powder market dedicated to SLS printing technology.

Functions for Sinterit PBT OPTIMAL:

• Exceptionally High Stiffness
• Intricately Detailed Prints
• Good Mechanical Properties
• High Chemical Resistance

Applications for Sinterit PBT OPTIMAL:

• Cost-effective prototyping
• Thermoforming molds
• Medical and dental applications
• Electrical and electronic components and enclosures
• Rigid tooling components

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Which Lisa Compact SLS 3D Printers are compatible with PBT Optimal?

How do Sinterit's SLS Powders Compare to Each Other?

How do all Sinterit SLS Powders Compare with Each Other?

Material	Surface Quality	Cost-Efficient	Prototyping	Functional
PA12 Smooth	✔️✔️✔️	✔️✔️✔️	✔️	✔️
PA12 Industrial	✔️✔️	✔️	✔️	✔️
PA11 Onyx	✔️	✔️✔️	✔️	✔️
PA11 CF	✔️✔️	✔️	✔️	✔️
PA11 ESD	✔️✔️	✔️	✔️	✔️
PP	✔️	✔️	✔️	✔️
Flexa Grey	✔️✔️	✔️✔️	✔️
Flexa Bright	✔️✔️	✔️✔️	✔️
Flexa Soft	✔️✔️	✔️✔️	✔️
PBT	✔️✔️	✔️✔️✔️✔️	✔️	✔️

What are the Technical Specifications of Sinterit's PBT?

GENERAL
Technology	Powder for Selective Laser Sintering (SLS) 3D Printing
Material Type	Polybutylene Terephthalate (PBT)
Dedicated for	Lisa X
Software	Sinterit Studio Advanced
Material refreshing ratio¹	20%
Color	Black
Nitrogen Needed	No
MECHANICAL PROPERTIES
Tensile Strength (X direction)	49.04 MPa
Tensile Strength (Y direction)	48.28 MPa
Tensile Modulus (X direction)	2718 MPa
Tensile Modulus (Y direction)	2663 MPa
Elongation at Break (X direction)	2.55%
Elongation at Break (Y direction)	2.62%
Impact Strength Charpy Method (unnotched) X	9.18 kJ/m2
Impact Strength Charpy Method (unnotched) Y	11.12 kJ/m2
THERMAL PROPERTIES
Melting Point	Approx. 169°C

¹ Refresh ratio is the amount of refreshing powder required to be mixed after a print with unsintered material.

Information provided within this document shows values for reference and comparison only. Parameters presented in this specification are subject to change without notice. Final part properties may vary based on a printed part design and orientation, material handling as well as printing environment (humidity and temperature). The manufacturer is responsible for validation whether the printout is accurate and fit for the intended purpose.

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Frequently Asked Questions

WHAT IS A REFRESH RATE?

• In the context of Sinterit products, refresh rate is the ratio of the minimum amount of fresh powder needed in a mixture of material used in an SLS 3D printer. The lower the refresh ratio, the better the cost-efficiency of the material.

HOW DO I REUSE USED PA11 ESD POWDER?

• Reuse leftover PBT Optimal powder on your next print by adding 20% of PBT Fresh Powder. By mixing 80% used PBT with 20% PBT Fresh, you will create a cost-effective, 100% print-ready PBT powder.

WHAT IS THE DIFFERENCE BETWEEN “Fresh” POWDER AND “Starter” POWDER?

• Powder Type	Condition	Description
  Starter	Print-Ready	Powder that's ready to print. (i.e. no need to mix used and fresh powder, it's ready to be poured into the machine and start printing)
  Fresh	Fresh	Powder that's for refreshing the powder. Mixing this with Used Powder will turn it into Print-Ready.
  	Used	Powder leftover from printing, present in overflow bin or remaining after printout cleaning.

WHEN DO I NEED "Starter" (AKA "Print-Ready") POWDER?

• Print-Ready powder is intended to be used only for the first print in a new Sinterit SLS 3D printer. After that first print, you'll refresh the used powder with "Fresh" Powder each time you print. You'll only need additional Print Ready powder if you're starting an entirely new print using ONLY "Starter" powder. Note that not all types of materials have "Starter" versions because not all types of materials require it.

CAN I USE "Fresh" POWDER INSTEAD OF "Starter" POWDER TO START PRINTING?

• We recommend starting your first print with a "Starter" powder if a version is available. If there is no "Starter" version available for a particular material, that means you can start with "Fresh" powder for printing.
  • Printing with purely "Fresh" instead of "Starter" powder (if available) is not economically optimal, but yes, it's technically possible.

HOW DO I MIX "Used" and "Fresh" POWDER?

• Powder Handling Stations or a Powder Sieve can help mix used and fresh powders.
  • The amount of needed fresh powder is automatically calculated by the 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.

HOW SHOULD I STORE THE PRINTING POWDER?

• Store the powder at room conditions ( ~23°C and 50% humidity – the lower humidity the better)
• Always store the material in a sealed dry box/container.
• Do not leave the container open.
• Clean the machine directly after printing and store the material immediately after removing the print cake.
• Do not let the powder stay in the printer for more than a couple hours.
• Put a few silicone absorbers in the container (but don’t add them to the printer)

DO I NEED AN ATEX VACUUM CLEANER TO CLEAN POWDER?

• Yes. 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.