三省工房 List of Products and Services

We will update various questions regarding the differences, advantages, and disadvantages of the vacuum casting method compared to mold forming, delving deeper into the content from Vol. 1 onwards. In this Vol. 2, we will focus on the comparison of the physical properties of vacuum casting materials. For basic knowledge about materials, please refer to Vol. 1. Vol. 2 (Materials Edition): Materials Used in Vacuum Casting - Physical properties table of materials * ABS grades * Acrylic grades ...etc.

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• Rubber mold
• Special Processing Machinery

I would like to update various questions about the differences, advantages, and disadvantages of the vacuum casting method compared to mold forming, delving deeper into the content from Vol. 1 onward. Vol. 1 (Basic Edition): What is Vacuum Casting? - Basic knowledge of materials * Thermosetting resins * Thermoplastic resins

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• Rubber mold
• Special Processing Machinery

【Introduction of Some Contents from the Case Study Collection】 ■ Choose your hardness and color! Examples of vacuum casting processing ■ Possible to use different types of inserts! Examples of processing similar to ABS, PP, and acrylic ■ Also compatible with glass-filled resins! Nylon casting ■ Examples of machining plastic (including difficult-to-cut materials) … and more Vacuum casting is a method that uses silicone molds instead of metal molds to produce replicas that faithfully reproduce the master model. = Advantages = - Much cheaper and faster turnaround compared to metal - Cost advantages for medium lots of about 20 to 30 pieces - Complex shapes can be easily reproduced - Supports inserts and coloring just like injection-molded products - Products can be made as a single piece * For more details, please download the PDF or feel free to contact us.

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• Rubber mold
• Special Processing Machinery

In this document, we introduce examples of products made with rubber integral molding and examples of products made with rigid integral molding. Our company has traditionally manufactured various integral molded products using soft rubber, but this time we tried using rigid materials. By using rigid materials, it can be utilized for prototype evaluation before blow molding. [Featured Product Examples] ■ Rubber Integral Molding ■ Rigid Integral Molding *For more details, please refer to the PDF document or feel free to contact us.

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• Rubber mold

"Vacuum casting" is a method that uses silicone molds instead of metal molds to produce replicas that faithfully reproduce the master model. The work is conducted in a vacuum state to ensure that the injected resin reaches every corner without bubbles. This document includes the work procedures for "vacuum casting" and experiments/results comparing "vacuum casting" and "atmospheric casting." [Contents] ■ What is vacuum casting ■ Why work in a vacuum ■ Experiment: Vacuum vs. Atmospheric ■ Results *For more details, please refer to the PDF document or feel free to contact us.

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• Vacuum forming machine
• Rubber mold

When conducting "mold structure verification," "shape and function verification," and "material property verification" for parts used in automobiles, robots, and airplanes, accurate evaluation can be achieved by prototyping with plastic materials that closely resemble the real thing. 【Do you have these concerns?】 ■ When performing mold structure verification and shape/function verification using modeling or 3D printing, it can reproduce undercuts and other shapes that are not feasible in the mold structure... ■ There are many substitute materials, which are not suitable for functional evaluation that requires strength... ■ Material property verification can only be evaluated using materials that will actually be used in mass production... and so on. *For more details, please download the materials or contact us directly.

• Prototype Services

We are manufacturing prototype parts using various methods. This is just one example, but we have accumulated many achievements and experiences. We are working daily with a strong desire for improvement to provide high-quality products at low prices with short lead times. Please feel free to consult with us; it may lead to a solution. ☆★ Product case collection is now available on the download page! ★☆ ■ Vacuum casting (rubber-like, ABS, PP) □ Nylon casting ■ Resin processing □ Metal processing　　　　　　etc...

• Processing Contract
• Rubber mold
• Special Processing Machinery

The "Vacuum Casting Method" by Sansei Workshop can faithfully produce replicas of industrial parts, functional components, and medical parts, including those made from soft rubber materials like polyurethane rubber (transparent resin), as well as industrial robots. Even if the old machine parts are no longer manufactured, we can create the same items if we have a master product. Additionally, by producing in a vacuum, we can avoid air bubbles and reproduce fine details. 【Do you have any of these concerns?】 - You have ideas you want to create but haven't been able to execute them. - You don't know any manufacturers that can produce even one piece. - You're worried about the cost. - You want to meet the delivery deadline for the prototype parts you've ordered. If you have such concerns, this campaign might be able to solve them! Please take this opportunity to apply! *If you would like to request sample production, please apply online at the URL below, or download the PDF materials, fill in the necessary information, and return it by fax.

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• Rubber mold
• Special Processing Machinery

The "Vacuum Casting Method" from Sansei Workshop can faithfully produce replicas of industrial parts, functional components, and medical parts, including those made from soft rubber materials like polyurethane rubber (transparent resin), as well as industrial robots. Even for old machine parts that are no longer manufactured, if there is a master product, we can create the same item. Additionally, by manufacturing in a vacuum, we can avoid air bubbles and reproduce fine details accurately. ★☆ We are currently accepting customer requests for "Can you do this?" We will solve it with our processing technology! ☆★ From those who contact us, we will randomly select and process a desired sample for free! (Until the end of December 2017) *If you would like a sample, please respond to the online survey or download the PDF materials and return them via fax.

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• Rubber mold
• Special Processing Machinery

Prototypes made through "resin and metal cutting processing" are manufactured using the materials that will be used in actual mass production, allowing for functional and evaluation tests to be conducted during the prototype stage. Additionally, PBT glass-filled block materials can also be produced using machining methods. 【Features】 ■ Functional and evaluation tests are possible ■ Short delivery times ■ Easy design changes after initial production ■ High dimensional accuracy *For more details, please download the materials or contact us directly.

• Prototype Services

The "Vacuum Casting Method" of Sansei Workshop produces prototype parts using low-melting-point metals instead of resin. Even for old machine parts that are no longer manufactured, if there is a master product, faithful replicas can be created. Additionally, by manufacturing in a vacuum, no air bubbles are introduced, allowing for the reproduction of fine details. 【Features】 ■ Short delivery times ■ Easily reproduces complex shapes ■ Cost advantages for medium lots of about 20 to 30 pieces ■ Products can be made from just one piece *For more details, please download the materials or contact us directly!

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• Rubber mold
• Special Processing Machinery

The "Vacuum Casting Method" of Sansei Workshop can faithfully produce replicas of industrial parts, functional components, and medical parts, including those made of soft rubber materials such as polyurethane rubber (transparent resin), starting with industrial robots. Even for old machine parts that are no longer manufactured, if there is a master product, the same item can be produced. Additionally, by manufacturing under vacuum, it is possible to avoid air bubbles and reproduce fine details. 【Features】 ■ Short delivery time ■ Easily reproduces complex shapes ■ Cost advantages for medium lots of about 20 to 30 pieces ■ Production can be done from just one unit *For more details, please download the materials or contact us directly!

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• Rubber mold
• Special Processing Machinery

The "Vacuum Injection Molding Method" involves creating a master model from easily machinable hard materials, such as those made with a 3D printer, then reversing it into silicone, pouring in urethane rubber, and molding it. This allows for the creation of complex master models without directly machining the rubber, so all that remains is to replicate it with a soft material. ★ We are currently accepting customer inquiries for "Can we do this?" We will solve it with our processing technology! ★ ▶ Please apply through the online application at the URL below, or download the PDF materials, fill in the necessary information, and return it via fax or email. 【Features of the Vacuum Injection Molding Method】 ■ Supports small lot sizes and short delivery times ■ Capable of reproducing complex shapes ■ Hardness can be selected from 20 to 90 degrees ■ Offers a wide variety of color options * For more details, please download the materials or contact us.

• Other Auto Parts
• Rubber mold
• Other machine tools

I believe that cutting processes will not yield accurate dimensions and shapes for items made of soft materials like rubber that have somewhat complex shapes. We must create the molding die while harboring these concerns. The "vacuum casting method" involves creating a master model from hard materials that are easy to machine, such as those made with a 3D printer, then inverting it in silicone, pouring in urethane rubber, and forming it. This allows for the creation of complex master models without directly machining the rubber, so all that remains is to replicate it with a soft material. [Partial content of technical documentation] ■ What is vacuum casting? ■ Types and properties of casting materials ■ Functions of vacuum casting ■ Comparison of working times ■ Examples of processed sample parts (with photos), etc. *For more details, please download the documentation or contact us directly.

• Other Auto Parts
• Rubber mold
• Other machine tools

Even with polyurethane rubber, which is one of the soft rubber materials, it is possible to faithfully produce replicas of industrial parts, functional components, and medical parts, including industrial robots. We will publicly disclose the technical fees for such prototype parts all at once, along with analysis data, photos, diagrams, comparison tables, and more! 【Contents】 ■ What is vacuum casting?　　　■ Master model ■ Casting materials　　　　　■ Working time for casting methods ■ Advantages and disadvantages of casting methods ■ Introduction to sample processing… and more *If you would like technical materials, please download them or contact us directly.

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• Rubber mold
• Special Processing Machinery

In the design and manufacturing of prototype parts, there are optimal processing methods depending on their application and quantity. To avoid selecting inappropriate processing methods that may result in insufficient strength, unnecessary costs, or risks, we are currently offering a free manual on plastic machining! 【Here’s a glimpse of the content】 ■Basic knowledge ■Benefits and drawbacks ■Sample processing examples (with photos), etc. *For more details, please download the materials or contact us directly!

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When creating prototype parts, don't various issues arise during the processing stages depending on the product and materials used? We will provide a detailed processing manual that analyzes these concerns with data, photos, and diagrams, free of charge! [Contents Included] ■ Manual for Vacuum Casting ■ Manual for Rubber Injection Molding ■ Manual for Plastic Machining *For more details, please download the materials or contact us directly.

• Resin mold
• Prototype Services

Even with soft polyurethane rubber material, it is possible to create prototype parts using "vacuum casting." Since functional parts, industrial parts, and medical parts are also produced in a vacuum state, it has become possible to faithfully reproduce them. 【Partial content of technical documentation】 ■ What is vacuum casting ■ Types and properties of casting materials ■ Functions of vacuum casting ■ Comparison of working time ■ Examples of processed sample parts (with photos) etc. *For more details, please download the documentation or contact us directly.

• Other Auto Parts
• Rubber mold
• Other machine tools

When attempting to mass-produce "soft products" like rubber and elastomer products, there is always a sense of unease because one has no choice but to create the final mold immediately, even for complex shapes. With our "vacuum casting method," urethane rubber casting is possible. There are a wide range of hardness options from 20 to 90 degrees, and coloring of the material is also flexible. By accommodating prototype rubber products, we can mitigate risks during mass production! ★ Urethane casting using the vacuum casting method can handle complex shapes at low cost and with short lead times, even for just one piece. 【Features of Vacuum Casting】 - Supports small lots and achieves short lead times - Capable of reproducing complex shapes - Abundant options for hardness and color selection We are currently offering hardness samples to the first five companies that apply! Please take the opportunity to try out our sample products made using the vacuum casting method! *If you would like a sample, please feel free to contact us using the information below.

• Resin mold
• Prototype Services

For rubber prototypes, the vacuum casting method is the best. If you want to produce a few pieces to evaluate their shape and function (mainly hardness), what manufacturing method would you use? Generally, methods like additive manufacturing or machining are considered, but while additive manufacturing can achieve the desired shape, it limits hardness. On the other hand, machining does not have hardness limitations, but because the material is soft, it cannot reproduce complex shapes. I believe you have experienced the frustration of having to compromise on one aspect to achieve another. In such cases, the method we recommend is vacuum casting. The master model is inverted into silicone, and a rubber-based resin is injected. Since the shape of the master model can be perfectly inverted into the silicone, it allows for the production of flawless replicas. Additionally, because both the mold and the product are soft, minor undercuts can be managed without the need for additional components.

• Other Auto Parts

In the design and manufacturing of prototype parts, the optimal processing method varies depending on factors such as their intended use and quantity. In the event that an inappropriate processing method is chosen, it can lead to insufficient strength or unnecessary costs, resulting in avoidable expenses and risks. Therefore, selecting the correct processing method is essential. In light of this, Sansei Workshop has focused on "plastic cutting processing" and "vacuum casting," and has created a comprehensive manual filled with technical information that thoroughly explains the basic knowledge of these processing methods, as well as their advantages and disadvantages. This booklet, condensed with the know-how of Sansei Workshop, which has accumulated numerous achievements in the design and manufacturing of prototype parts, is now available for free to all engineers! ★ You can download and view two volumes: "Plastic Cutting Processing Edition" and "Vacuum Casting Edition" from the link below.

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When there are old parts without data, and although there are molds, there is no data, if the actual item is available, we can create data based on it. I think this is an effective method in cases where old parts are suddenly needed. Additionally, by scanning freehand-created objects, we can preserve them as data. As long as the data is retained, it becomes possible to replicate the same product through modeling or machining when necessary.

• Prototype Services

We performed three-dimensional cutting of PBT glass-filled block material through machining. This was produced in response to the customer's need to create a prototype using the actual material for mass production and to conduct strength tests.

• Prototype Services

"Vacuum casting" is a prototyping method that uses thermosetting resin (urethane) to easily reproduce complex shapes. It offers lower costs and shorter lead times compared to molds. Like injection molded products, it also supports inserts and coloring. Our company specializes in insert casting with hinge functions, soft cast products such as rubber, and complex cast products that utilize many nested shapes. [Features] ■ Cost-effective and short lead times ■ Easily reproduces complex shapes ■ Cost advantages for medium lots of around 20 to 30 pieces ■ Capable of producing even a single unit *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

• Resin mold
• Prototype Services

Our vacuum casting specializes in complex shapes, hybrid castings such as hinges and bolts, functional parts that use many inserts, and soft castings like rubber equivalents. We strive to provide quick responses and flexible support throughout the entire process, from quoting to delivery. We can manufacture from data, and we also respond to diverse customer needs in the best possible way, whether you only have drawings or just the actual items currently in use.

• Prototype Services