MSLA: Everything you need to know

M-SLA 3D Printing Everything you need to know about Phrozen-Sonic-Mini-8k

Explore the world of Masked Stereolithography (MSLA) in 3D printing, its advantages, and comparisons with other technologies in our comprehensive guide.

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Additive manufacturing, commonly known as 3D printing, has revolutionized the way we create objects, from intricate prototypes to functional components. Among its various technologies, Masked Stereolithography (MSLA) stands out as a pivotal technique. This blog post delves into MSLA, exploring its mechanism, advantages, and how it compares with other 3D printing technologies under the Vat Photopolymerization umbrella and beyond.

What is MSLA?

Understanding the Basics

MSLA is a form of 3D printing technology that falls under the broader category of Vat Photopolymerization. It involves curing photosensitive resin with a UV light source, masked by an LCD screen to shape each layer of the print. This method has gained popularity due to its precision and speed.

Phrozen Mega 8K MSLA

Comparing MSLA with Other 3D Printing Technologies

MSLA vs. Vat Photopolymerization (VPP)

VPP is a broad category that includes MSLA. While MSLA uses an LCD as a mask, traditional VPP methods may use different approaches for curing the resin. MSLA’s use of LCD screens allows for more detailed control over the curing process, resulting in finer details and quicker production times.

MSLA and Digital Light Systems (DLS)

DLS, also a subset of VPP, differs from MSLA in its light source. DLS uses the DLP technology in combination with a oxygen permeable tub, which can lead to drastically higher print speeds and improved surface finish.

The Difference: MSLA and Direct Light Projection (DLP)

DLP, similar to MSLA, uses a digital light projector to cure resin. However, the key difference lies in the light modulation. DLP modulates light using micro mirrors, while MSLA uses an LCD screen. This results in different levels of resolution and speed.

Stereolithography (SLA) vs. MSLA

SLA, the oldest form of Vat Photopolymerization, uses a laser to cure the resin. Compared to MSLA, SLA can achieve high accuracy and fine details but typically operates slower and is more suitable for smaller objects.

Lubricant Sublayer Photo-curing (LSPc) and MSLA

LSPc is a recent innovation focusing on reducing the forces during the peeling process in 3D printing. While it offers benefits in terms of print quality and longevity, MSLA still excels in speed and cost-effectiveness.

Lithography-based Ceramic Manufacturing (LCM)

LCM specializes in producing ceramic objects. While MSLA focuses on plastic resins, LCM uses a similar photopolymerization process for ceramics. The choice between the two depends largely on the material requirements of the print job.

Continuous Digital Light Manufacturing (cDLM) Compared to MSLA

cDLM, an evolution of DLP, allows for continuous printing, which can be faster than MSLA. However, MSLA often provides a better balance between speed, resolution, and cost.

Hybrid PhotoSynthesis (HPS) versus MSLA

HPS combines different 3D printing methods, potentially offering the best of each. However, it’s typically more complex and costly compared to the straightforward approach of MSLA.

Lithography-based Metal Manufacturing (LMM) vs. MSLA

LMM is used for metal printing and operates on principles similar to MSLA but with metal powders. MSLA remains confined to resin-based materials, making it less suitable for metal applications.

Two Photon Polymerization (2PP) and MSLA

2PP offers extremely high resolution at a microscopic scale, surpassing MSLA. However, its slow speed and high cost make it impractical for most applications outside of specialized research.


MSLA stands as a cornerstone in additive manufacturing, offering a balance of speed, detail, and cost-effectiveness. While other technologies under the Vat Photopolymerization umbrella and beyond have their unique strengths, MSLA’s versatility makes it a go-to choice for a wide range of applications.


What is MSLA in 3D printing? MSLA is a 3D printing technology that uses an LCD screen to mask and shape UV light, curing photosensitive resin layer by layer.

How does MSLA differ from traditional SLA? Unlike SLA, which uses a laser, MSLA employs an LCD screen for masking UV light, often resulting in faster printing times.

Is MSLA more cost-effective than other 3D printing technologies? Yes, MSLA tends to be more cost-effective due to its faster printing speeds and efficient use of materials.

Can MSLA produce high-resolution prints? Yes, MSLA is capable of producing high-resolution prints, suitable for detailed prototypes and intricate designs.

What materials can be used with MSLA? MSLA primarily uses photopolymer resins, offering a range of properties for different applications.

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