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PU Rigid 1000 Resin

Reference: RS-FL-RG-1000

Brand: Formlabs

This product could be delivered in a period exceeding the standard.

Condition: New product

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135,00 €

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PU resin for stiff, sturdy and resistant prints. For commercial and research uses only.

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Data sheet
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Usage tips
Specifications

Formlabs is an American manufacturer of 3D printing equipment and materials. What started in 2011 with 3 MIT students is now a renowned company with offices all around the world. Formlabs are famous for their 3D resin printers and resins. Their catalog keeps adapting to the needs of the market and being extended by new cutting edge materials, such as the PU Rigid 650 resin and the PU Rigid 1000 resin.

Polyurethane parts are typically made by casting or reaction injection molding. Thanks to Formlabs, it is now possible for businesses and research centers to 3D print polyurethane in house on the Formlabs 3D printers. The PU Rigid resins are a custom mix of high quality acrylate and urethane, the result of hybrid chemistry and many years of research. This formula combined with moisture curing gives the pieces 3D printed with the PU Rigid resins the final and enhanced polyurethane state.

Parts 3D printed with the Formlabs PU Rigid 1000 resin

Image 1: Parts 3D printed with the Formlabs PU Rigid 1000 resin. Source: Formlabs.

The PU Rigid 1000 resin is a polyurethane photopolymer designed for 3D printing semi-rigid and tough polyurethane parts, prepared to withstand repeated heavy impacts and hostile environments.

Just like the PU Rigid 650 resin, the PU Rigid 1000 resin is stable when exposed to ultraviolet radiation and humidity. Both resins also have flame retardancy properties and are sterilisable. Due to their hybrid chemical composition, the Formlabs Polyurethane resins are stronger and more durable than other SLA resins, which has been proven in accelerated aging tests.

Video 1: The PU Rigid 1000 resin subjected to an impact test. Source: Formlabs.

As it can be seen in the video above, the PU Rigid 1000 resin is extremely resistant to repeated impact. This makes it apt for applications where the 3D printed part has to be stiff, rigid and unyielding, capable of withstanding impact and shocks.

A comparison of the PU Rigid 650 and 1000 mechanical properties

Image 2: A comparison of the PU Rigid 650 and 1000 mechanical properties. Source: Formlabs.

Depending on the user’s needs and resources, the PU Rigid 1000 resin can have various workflows. It can be printed with a dry cabinet or in ambient conditions, with automatic or manual resin dispensing.

Workflow	Method	Advantages	Considerations	When to use
Recommended	Automatic filling + dry cabinet	Best results + easy workflow	Requires dry cabinet	Frequent printing
Low cost	Automatic filling + ambient conditions	Low cost + simple	Shorter pot life	Printing in ambient conditions
Modified	Manual filling + dry cabinet	Extended pot life	Requires dry cabinet + fine tuning	Printing intermittently / repeated printing of the same part

Table 1: An overview of the workflow possibilities with the PU Rigid 1000 resin. Source: Formlabs.

The PU Rigid 1000 resin 3D printing workflow is explained in detail in a video from the manufacturer:

Video 2: Polyurethane 3D printing workflow. Source: Formlabs.

The workflow of the Formlabs PU Rigid resins is considerably longer than with other types of resin. The PU Rigid resins require additional equipment, such as a dry cabinet for the 3D printer, a PGDA solvent for rinsing the parts and, optionally, a compressed air gun for removing any resin leftovers, as well as a humidity cure oven for post-curing. These steps should be followed for optimal results with the PU Rigid 1000 resin. A full list of the recommended post processing tools can be found on the manufacturer’s website.

Pouring the PU Rigid resin into a cartridge

Image 3: Pouring the PU Rigid resin into a cartridge. Source: Formlabs.

The pack includes a 1 l bottle of the PU Rigid 1000 Resin, an empty cartridge, and a funnel to help pour the resin into the cartridge for printing.

Thanks to its stiffness and rigidity, the PU Rigid 1000 resin is the perfect material for manufacturing prototypes (except for same-day prototypes, since the resin requires lengthy post processing) as well as end-use pieces for multiple applications, for example in the automotive, aerospace and machine industries. Some example applications include:

Protective casings, housings and enclosures for vulnerable parts
Heavy-duty sturdy consumer products
Static jigs and fixtures undergoing high stress

The PU Rigid 1000 resin supports the 100 µm and 50 µm printing resolutions. It is compatible with the Form 3, Form 3+, Form 3B, Form 3B+ and Form 2 printers. It is compatible with the Form 2 LT and Form 3/3B V2.1 resin tanks, and with the Form 3, Form 2, and the Form 3 Stainless Steel build platform.

For more detailed technical and safety information about the Formlabs PU Rigid 1000 resin, please consult the datasheets available in the Downloads section for this product.

The Formlabs PU Rigid 1000 resin is the perfect material for engineers, designers or other professionals who want to 3D print strong, durable and resistant pieces in house, without the need to resort to traditional manufacturing methods and third parties’ services. It should be kept in mind that the PU Rigid 1000 resin is meant for commercial and research use only, and it should not be used outside of commercial or research facilities or institutions.

Elongation at break (%)	80
Tensile strength (MPa)	35
Tensile modulus (MPa)	920
Flexural strength (MPa)	32
Flexural modulus (MPa)	750
Surface hardness	7
Flexibility	Flexibility
UV resistance	UV resistance
Chemical resistance	Chemical resistance

The shelf life of the PU Rigid 1000 resin is 12 months (from the manufacturing date) in the unopened aluminum bottle and the pot life is about 1 month once the bottle has been opened. The pot life can vary from 4 to 7 weeks depending on the ambient humidity and the temperature outside the cartridge.

The PU Rigid 650 and PU Rigid 1000 resins are different than other Formlabs resins in terms of printing and post processing, which is why the following usage tips should be read thoroughly.

Elevated moisture and temperature reduce the Formlabs PU Rigid resins’ pot life. Exposure to these conditions during storing or printing will result in the resin curing, increasing its viscosity and eventually becoming non viable. This is why the PU Rigid 650 and 1000 resins should be stored in a controlled humidity cabin (dry cabinet) before, during and after use. The dry cabinets recommended by the manufacturer can be seen here.

Viable and non viable PU Rigid 650 resin

Image 1: Viable (left) and non viable (right) PU Rigid resin. Source: Formlabs.

The resin in the tank should be changed or new resin should be added to the tank when the resin viscosity exceeds 2000 cPs. This can be checked with a Zahn cup #5 viscometer or with a blunt, flat object, as shown in the picture above. If the resin flows easily and fills in the gap left by the tool, the viscosity is low enough to continue printing.

Washing and cleaning of parts 3D printed with the PU Rigid 650 resin

Image 2: Washing and cleaning of parts 3D printed with the PU Rigid resin. Source: Formlabs

The PU Rigid 1000 resin should be washed in the FormWash for 2 minutes in combination with a Propylene Glycol Diacetate (PGDA) solvent. An optional 15 second bath in an n-Butyl solvent will speed up the evaporation of the PGDA solvent. An air compressor can also be used to remove any resin leftover from the baths. Do not wash parts printed in a PU Rigid resins with isopropyl alcohol (IPA) as it can cause degradation in material properties.

In case the user does not have the FormWash machine, the Formlabs Finish kit can be used as well. The finish kit comes with various useful tools for removing parts from the build plate or removing supports.

Parts 3D printed with the PU Rigid 650 resin should be removed carefully and dried in ambient temperature

Image 3: Parts 3D printed with the PU Rigid resins should be removed carefully and dried in ambient temperature. Source: Formlabs.

Both PU resins adhere to the build platform very strongly. Therefore, the manufacturer recommends printing all parts on supports to make removal from the build platform easier and to reduce accidental damage to the part during removal. It is recommended to use a sharp tip spatula for part removal to reduce the pressure as much as possible.

Next, the pieces 3D printed with the PU Rigid 1000 resin should dry completely in ambient temperature for at least 24 hours. As far as curing, the PU Rigid 1000 resin should be cured in a humidity cure oven at 46 º Celsius and at 70 % relative humidity. No other curing device will work since the resins need specific levels of humidity for the PU to finish its reaction. The humidity cure ovens recommended by the manufacturer can be found here.

Before curing the parts 3D printed with the PU Rigid resin, remove the supports

Image 4: Before curing the parts 3D printed with the PU Rigid resin, remove the supports. Source: Formlabs.

The curing time largely depends on the part thickness and can be anywhere between 3 and 14 days. It is highly recommended to cure the parts without the supports as they are more difficult to remove if they are post-cured.

A quick start guide and more detailed instructions on using PU Rigid 1000 Resin can be found on the manufacturer’s website.

General information
Manufacturer	FormLabs (Massachusetts, EEUU)
Technology	SLA / LFS
Material	Photopolymer
Wavelength	UV 405 nm
Format	1 litre
Compatible 3D printers	Form 3, Form 3+, Form 3B, Form 3B+, Form 2
Compatible resin tanks	Form 2 LT, Form 3/3B V2.1
Printing properties
Layer height	100-50 microns
Layer exposure time	There is no need to configure the print parameters on Formlabs printers. The chip embedded in the resin cartridges detects the type of material and sets the print automatically.
Layer cooling time
Lifting height
Exposure of the lower layers
Number of lower layers
Curing and washing properties
Wash time (FormWash)	2 min in PGDA
Curing time (full cure in FormCure)	Humidity Cure Chamber, according to indications
Mechanical properties (cured)
Izod impact resistance (ASTM D256-10)	170 J/m (notched)
Charpy impact resistance (ISO 179-1:2010(E))	23 kJ/m² (notched)
Elongation at break (ASTM D638)	80 %
Tensile strength (ASTM D638)	35 MPa
Tensile modulus (ASTM D638)	920 MPa
Flexural strength (ASTM D 790-15)	32 MPa
Flexural Modulus (ASTM D 790-15)	750 MPa
Surface hardness (ASTM 2240)	Shore 74 D
Thermal properties (cured)
Softening temperature	-
Electrical properties (cured)
Volume resistivity (ASTM D257-14)	6.5 x 10¹¹ Ohm/cm
Further information
Flammability rating	HB UL 94
Lifetime (from manufacture)	24 months
HS Code	2916.1

* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend that you confirm the results and final properties with your own test. For further information, please refer to the product data sheet.