Acrylic (PMMA) Prototyping Service

Overview of Acrylic (PMMA)

Acrylic (PMMA) Material Properties

Density1.18 g/cm³
Elongation at Break2–5%
Tensile Strength60–70 MPa
Impact Strength (Notched Izod, 73 °F)2–5 kJ/m²
HardnessRockwell M90–100 (M-scale)(approximately Shore D 80–85)
Flexural Strength80–110 MPa
Heat Deflection Temp. (HDT @ 1.8 MPa)203–212 °F

Note: Values may vary slightly depending on specific grades or formulations.

Benefits of Acrylic (PMMA)

Optical Clarity: Allows up to 92% light transmission, offering a clear, glass-like appearance.

Weather Resistance: Resistant to UV light and outdoor conditions, making it suitable for external or high-exposure applications.

Lightweight: Weighs about half as much as glass while still providing adequate rigidity and strength.

Versatile Processing: Can be easily machined, laser cut, thermoformed, or polished to achieve specific shapes and finishes.

Aesthetic Flexibility: Can be dyed, painted, or frosted, enabling custom looks for prototypes or display models.

INAC US’s Acrylic (PMMA) Prototyping Capability

Acrylic (PMMA) Prototype Portfolio

Acrylic (PMMA) Prototyping Methods

CNC Machining

CNC machining delivers precise, smooth-finished acrylic parts with minimal distortion. 

By using sharp tooling and controlled feeds, it’s possible to produce clear, polished edges and complex geometries. 

This method is ideal for achieving tight tolerances and a highly refined surface appearance

Lathe Processing

Lathe processing is excellent for producing cylindrical or rounded acrylic components. 

The rotating operation ensures uniform shaping and can yield sleek, transparent surfaces when using fine tooling and careful polishing techniques. 

This approach suits items such as tubes, rods, and disc-like prototypes.

FAQ about INAC US's Acrylic (PMMA) Prototyping Service

A. Lead times vary based on part complexity, but our standard turnaround is typically 5–10 business days. Expedited options may be available upon request.

A. Absolutely. By using polishing or careful CNC machining, we can produce clear and visually appealing prototypes.

A. Yes. Acrylic (PMMA) offers good UV resistance and weatherability, making it a strong choice for outdoor signage, display cases, or other exterior components.

A. We provide sanding, polishing, painting, laser etching, and even assembly services to help finalize your prototypes. These techniques can improve aesthetics, fit, and functionality.

A. Absolutely. We cater to one-off prototypes as well as short production runs. Our flexible manufacturing approach accommodates various project sizes and budgets.

Start Prototyping Today with INAC US

Let us bring your Acrylic (PMMA) prototypes to life. 

With our dedicated team and cutting-edge facilities, we manage every step—from design consultation to final inspection—ensuring top-tier quality and fast turnaround. 

Contact us now to discuss your project requirements and discover how our Acrylic prototyping services can help you succeed.

Guide to Acrylic (PMMA) Prototyping

What Is Acrylic (PMMA) Material?

Acrylic, also known as PMMA (Polymethyl Methacrylate), is a transparent thermoplastic renowned for its exceptional clarity and weather resistance. 

It offers a glass-like appearance while being significantly lighter and more shatter-resistant. 

Acrylic is also easy to machine, polish, and bond, which makes it an excellent choice for display cases, light covers, signage, and other aesthetic applications. 

Its versatile properties allow for both functional and visual prototyping, providing designers and engineers with a material that is both visually striking and relatively durable.

Grades of Acrylic (PMMA) Material

GradeValue
General-Purpose Acrylic (PMMA)This is the most widely used grade, offering high optical clarity, good impact resistance, and UV stability. It is used for display cases, signage, windows, and decorative panels.
Optical-Grade AcrylicThis ultra-clear grade has low haze and high light transmission, making it suitable for lenses, light guides, and precision optical components where visual accuracy is critical.

Applications of Acrylic (PMMA) Prototypes

Comparing to Acrylic Other Engineering Plastics

Plastic Description
ABS (Acrylonitrile Butadiene Styrene) – Good Impact Strength: The butadiene content provides toughness and shock resistance.
– Easy Processing: Commonly injection molded; also suitable for 3D printing (FDM).
– Balanced Properties: Offers moderate strength, decent chemical resistance, and good dimensional stability.
PC(Polycarbonate) – High Impact Resistance: Often used for safety shields, machine guards, and protective screens.
– Optical Clarity: Up to 90% light transmission, though prone to scratching without hard coatings.
– Heat & Flame Resistance: Can withstand elevated temperatures; available in flame-retardant grades (UL 94 V-0).
– Dimensionally Stable: Retains shape under load, making it suitable for precision parts.
POM(Polyoxymethylene) – High Stiffness & Low Friction: Excellent for gear teeth, bearings, and wear strips.
– Dimensional Stability: Minimal moisture absorption, retaining tight tolerances.
– Good Chemical Resistance: Withstands many solvents, fuels, and lubricants.
PP (Polypropylene) – Lightweight & Affordable: One of the lowest densities among engineering plastics, making it cost-effective.
– Good Chemical & Moisture Resistance: Does not absorb water readily, resists many acids and bases.
– Flexible in Thin Sections: Used in living hinges.
Nylon – Excellent Toughness & Wear Resistance: Ideal for moving or sliding parts.
– Varied Grades: Nylon 6, 6/6, 12, etc., each offering different stiffness, moisture absorption, and temperature performance.
– Good Fatigue Strength: Retains mechanical integrity under repeated stress.
PEEK (Polyether Ether Ketone) – High Temperature Tolerance: Can sustain mechanical properties up to ~480°F.
– Chemical & Hydrolysis Resistance: Suitable for harsh chemical environments; steam-sterilizable.
– Biocompatibility: Certain grades used in medical implants.
– Low Outgassing: Ideal for aerospace applications.
PPS(Polyphenylene Sulfide) – High Thermal Stability: Can withstand continuous use at ~390–430°F.
– Flame Retardant & Chemical Resistant: Excellent performance in corrosive and high-temperature conditions.
– Good Dimensional Precision: Low coefficient of linear thermal expansion (CLTE).
PET(Polyethylene Terephthalate) – Good Stiffness & Dimensional Stability: Suitable for precision mechanical parts.
– Low Moisture Absorption: Minimizes swelling or warpage.
– Chemical Resistance: Resists oils, solvents, and mild acids.
PBT(Polybutylene Terephthalate) – Good Electrical Insulation: Ideal for connectors, switches, and other E/E parts.
– Dimensional Stability: Low shrinkage, low moisture absorption, good for tight tolerances.
– Chemical & Heat Resistance: Withstands automotive fluids and moderate temperatures (~302–320°F).

If you have something you want to make, please contact us. Even a rough idea is OK. We will give shape to your idea and deliver it to you. Please feel free to contact us.

STEP5: Quality Assurance and Precision Inspection

A quality inspection is performed. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Processing and Finishing

Finishing is done by removing the supports, polishing, and applying transparency treatment. It is also possible to paint and apply plating to the formed product.

STEP3: UV-Laser Print Formation (SLA Process)

Output: The product is formed by irradiating the liquid with a laser beam of UV light and laminating it. The conditions of the external environment, such as room temperature and humidity, must be maintained.

STEP2: Model Program Generation and Support Adjustment

A program for model formation is created. Depending on the shape, it may be necessary to adjust the degree of tilt and the position of the supports.

STEP1: CAD File Submission

Upload your CAD to our online quoting platform.

STEP 3: Rendering and Scene Integration

We can also handle exterior modeling and interior structure design based on illustrations. After creating the 3D models, we can create a rendering to fit a scene. We can deliver images even if we do not proceed with production.

STEP 2: Detailed Design and 3D Modeling

Once the design is determined, drawings and 3D models will be created. The structure will be examined, taking into consideration not only the external design but also functionalities such as mating and sliding.

STEP 1: Initial Design Consultation

The first step is a meeting to discuss the project. Drawings are not required for this meeting. We will create a design from a sketch based on the overall image and concept that you have in mind.

STEP5: Quality Assurance and Inspection

We perform quality inspections. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Casting Finishing

Vacuum casting materials are cured and then taken out of the silicone rubber mold. Then we perform finishing such as deburring and gating, and they are made into finish products.

STEP3:Material Injuction

Liquid casting material is injected into the silicone rubber mold in a vacuum environment. 

STEP2: Mold Preparation

The silicone mold is cut open into a male and female mold, and the master model is removed.

STEP1: Mold Creation

The master model is fixed to a wooden frame and silicone is poured to create a mold.