SLA – Clear General Purpose

Clear General Purpose Resin is a transparent 3D printing material designed for Stereolithography (SLA) technology. It is commonly used for applications where clarity, aesthetics, and visual inspection are important. This resin offers a balance of mechanical properties and optical transparency, making it suitable for a variety of general-purpose uses.

Key Material Facts:

• Great for models and prototypes requiring part clarity
• Functional end-use prototypes
• High Detail for demanding applications, capture the finest of features
• Beautiful transparent parts
• Parts can be printed solid and air / fluid tight right off the printer, no sealing required
• Strong and Precise parts that create accurate and robust parts, ideal for
  rapid prototyping, functional testing and product development.
• Compatible with assembly features including:
  • Glue Joints / light welding
  • Printed In Threads (However Helicoils are recommended)

Common Applications:

• Lighting and lenses
• Fluid flow visualization models
• Transparent assemblies
• Packaging/bottles
• Medical models and devices (USP Class VI capable)
• Prototypes of conformal cooling molds
• Models requiring high clarity
• Headlamps, Windows, IR Lens
• Medical Models and Medical Devices

Material Reference Data:

• For more information on how the SLA printing process works please check out this page.
• For SLA part design trick and tips check out this page.
• Material manufacturers website

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SLA – Clear General Purpose: Technical specifications

Mechanical Properties – 5 min (Ambient) Cured Material

Property Description	Measurement (Metric)	Measurement (English)
Ultimate Tensile Strength (MPa | PSI)	51	7340
Tensile Modulus (MPa | KSI)	2575	373
Elongation at Break	10 %	10 %
Flexural Strength (MPa | PSI)	92	13343
Flexural Modulus (MPa | KSI)	2450	355
Notched Izod (J/m | ft-lbf/in)	29	0.542
Heat Deflection Temperature – Post-Cured 5 min (Ambient)	56 °C @ 0.45 MPa (66 PSI) 49 °C @ 1.82 MPa (264 PSI)	133 °F @ 0.45 MPa (66 PSI) 120 °F @ 1.82 MPa (264 PSI)

Polished Optical Properties – 5 min (Ambient) Cured Material

Transmission @ 2mm	85%
a* @ 2mm	-4.02
b* @ 2mm	7.52

Transmission @ 10mm	59%
a* @ 10mm	-4.25
b* @ 10mm	5.98

SLA – Clear Solvent Compatibility

Percent weight gain over 24 hours for a printed and post-cured 1 x 1 x 1 cm cube immersed in respective solvent

Solvent	24 hr weight gain, %
Acetic Acid 5%	< 1
Acetone	Sample cracked
Bleach ~5% NaOCl	< 1
Butyl Acetate	< 1
Diesel Fuel	< 1
Diethyl glycol Monomethyl Ether	1.7
Hydraulic Oil	< 1
Hydrogen peroxide (3%)	< 1
Isooctane (aka gasoline)	< 1
Isopropyl Alcohol	< 1
Mineral oil (Light)	< 1
Mineral oil (Heavy)	< 1
Salt Water (3.5% NaCl)	< 1
Skydrol 5	1
Sodium Hydroxide solution (0.025% PH 10)	< 1
Strong Acid (HCl conc)	Distorted
Water	< 1
Xylene	< 1

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Finish / Color Options:

Clear – Level 0 Strip & Ship – Excess resin is cleaned off the parts and supports are removed. Support surfaces are not sanded and are left rough. Part is transparent but layer lines are visible and looking through the part will be blurry.

Clear – Level 1 Bead Blast– Support surfaces are sanded. Bead blast applied to entire part for uniform finish. Parts have a smoked appearance like a milk jug.

Clear – Level 2 Rough Coat– Rough support areas are sanded smooth and the part is clear coated, layer lines will be visible in the clear coat but you can easily see through the part and make out details on the other side.

Clear – Level 3 Optical Coat – Layer lines removed from the entire part by hand sanding, Part is then clear coated and its as close to being optically clear* as is possible.

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SLA – Clear General Purpose: Part Gallery

Full Rocket Testing Video can be found here.