Resin (MSLA)

Tough Resins 3D printing

The Tough resins are tough resins for functional prototypes: Tough 1000 is the more ductile, Tough 2000 the stiffer. We print them in Brescia with MSLA.

Price band

€€

2 variantsData checked on 13 November 2026

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What it is for

The Tough resins are used for functional prototypes that have to behave like an injection-molded plastic: enclosures with snap fits, hinges, clips, lids, light jigs and tools, parts that are assembled and taken apart. They combine the detail of resin printing with a toughness that standard resins lack.

Do not choose them for parts that work in heat: after post-cure the data sheets report a heat deflection temperature at 0.45 MPa of 55.3 °C for Tough 1000 and 70 °C for Tough 2000. For heat use High Temp; for high stiffness, Rigid 10K; for continuous loads, a filament such as nylon.

Variants compared

Variant

Tough Resins: properties of the variants from the makers' data sheets, one column per variant: Tough 1000
Property	Tough 1000Quote
Property	green	post-cured 12 min at 70 °C
Mechanical
Tensile strengthASTM D638-14	23.7 MPa	26.3 MPa
Tensile modulusASTM D638-14	844 MPa	932 MPa
Elongation at breakASTM D638-14	217%	180%
Flexural strengthASTM D790-17	22.6 MPa	29 MPa
Flexural modulusASTM D790-17	595 MPa	761 MPa
Charpy impact, notchedISO 179-1	7.6 kJ/m²	9 kJ/m²
Charpy impact, unnotchedISO 179-1	no break	180 kJ/m²
Izod impact, notchedASTM D256-10	69 J/m	72 J/m
Shore hardnessASTM D2240, post-cured 12 min at 70 °C	56 Shore D
Thermal
Heat deflection temperature (HDT) at 0.45 MPaASTM D648-16	49.7 °C	55.3 °C
Heat deflection temperature (HDT) at 1.8 MPaASTM D648-16	40.4 °C	44.6 °C
Glass transition (Tg)DMA	106.6 °C
Physical
DensityASTM D792-20, post-cured 12 min at 70 °C	1.07 g/cm³
Fire behavior
Flammability ratingUL 94, post-cured 12 min at 70 °C	HB
Source	Resin maker's data sheet, Rev. 01 23/09/2025, PDFread on 13 November 2026

Tough Resins: properties of the variants from the makers' data sheets, one column per variant
Property	Tough 1000Quote		Tough 2000Quote
Property	green	post-cured 12 min at 70 °C	green	post-cured 12 min at 70 °C
Mechanical
Tensile strengthASTM D638-14	23.7 MPa	26.3 MPa	26.1 MPa	40.4 MPa
Tensile modulusASTM D638-14	844 MPa	932 MPa	1,235 MPa	1,800 MPa
Elongation at breakASTM D638-14	217%	180%	149%	79%
Flexural strengthASTM D790-17	22.6 MPa	29 MPa	38 MPa	67 MPa
Flexural modulusASTM D790-17	595 MPa	761 MPa	1,040 MPa	1,701 MPa
Charpy impact, notchedISO 179-1	7.6 kJ/m²	9 kJ/m²	2 kJ/m²	2.4 kJ/m²
Charpy impact, unnotchedISO 179-1	no break	180 kJ/m²	20 kJ/m²	31 kJ/m²
Izod impact, notchedASTM D256-10	69 J/m	72 J/m	24 J/m	25 J/m
Shore hardnessASTM D2240, post-cured 12 min at 70 °C	56 Shore D		61 Shore D
Thermal
Heat deflection temperature (HDT) at 0.45 MPaASTM D648-16	49.7 °C	55.3 °C	53 °C	70 °C
Heat deflection temperature (HDT) at 1.8 MPaASTM D648-16	40.4 °C	44.6 °C	45 °C	57 °C
Glass transition (Tg)DMA	106.6 °C		112.2 °C
Physical
DensityASTM D792-20, post-cured 12 min at 70 °C	1.07 g/cm³		1.09 g/cm³
Fire behavior
Flammability ratingUL 94, post-cured 12 min at 70 °C	HB		passed, no class stated
Source	Resin maker's data sheet, Rev. 01 23/09/2025, PDFread on 13 November 2026		Resin maker's data sheet, Rev. 01 10/06/2025, PDFread on 13 November 2026

Typical values from the makers' data sheets, measured on specimens under the conditions stated. They are not guaranteed design values: for a critical application ask us for a test on your part.

Treatments after printing

The table sets the values of the green part next to those after a 12-minute post-cure at 70 °C, as the maker's data sheet gives them.

Design limits

Build volume: 353 × 196 × 350 mm
Minimum wall: 1 mm
Dimensional tolerance: ±0.3 mm up to 100 mm, ±0.3% above

These are the limits of the process, the same for every variant unless stated. For critical dimensions, talk to us before printing.

Which variant to choose

Tough 1000: the more ductile. After a 12-minute post-cure at 70 °C: tensile strength 26.3 MPa, modulus 932 MPa, elongation at break 180% (ASTM D638), notched Izod impact 72 J/m (ASTM D256). For parts that have to bend without breaking.
Tough 2000: the stiffer and stronger. After a 12-minute post-cure at 70 °C: tensile strength 40.4 MPa, modulus 1800 MPa, elongation at break 79% (ASTM D638), heat deflection temperature 70 °C at 0.45 MPa (ASTM D648). For enclosures, brackets and jigs.

Data sheets

Resin maker's data sheet, Rev. 01 23/09/2025, PDFread on 13 November 2026
Columns: Tough 1000
Resin maker's data sheet, Rev. 01 10/06/2025, PDFread on 13 November 2026
Columns: Tough 2000

FAQ

Frequently asked questions

Yes, these are typical uses. Tough 1000 stands wide bending (elongation at break 180% after post-cure, ASTM D638) and suits thin hinges and clips. Tough 2000 is stiffer and holds its shape better, for snaps that have to grip. The thickness of the joint matters as much as the material.

After a 12-minute post-cure at 70 °C the data sheets report a heat deflection temperature at 0.45 MPa of 55.3 °C for Tough 1000 and 70 °C for Tough 2000; at 1.8 MPa the values are 44.6 °C and 57 °C (ASTM D648). They are resins for parts that work at room temperature.

Like all photopolymer resins, over time and in sunlight they tend to stiffen and yellow. They are fine for functional prototypes, jigs and short runs indoors. For parts that stay in service for years or outdoors, a thermoplastic such as nylon or ASA is the better fit.

Do you have a part to print in Tough Resins?

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