Custom Bottomless Portafilter Manufacturer | CNC Machined in China – Kinsai Machining

Find the full potential of your espresso extraction with precision machined custom bottomless portafilters, also known as naked portafilters. At Kinsai Machining, we provide comprehensive OEM services, covering everything from prototyping to mass production based in China. Our commitment is to manufacture your unique designs with high precision while ensuring the protection of your intellectual property.

Why Custom Bottomless Portafilter ?

The custom bottomless portafilter breaks away from traditional design by removing the spout and bottom mesh, exposing the coffee puck for real-time channeling diagnosis. coffee shops, chain brands, and coffee equipment suppliers have come to rely on it to achieve a consistent 30ml ±2ml espresso output under 9-bar pressure, effectively resolving the pain points associated with standard portafilters.

Custom CNC Bottomless Portafilter Manufacturer

Visualized Extraction Management

With custom made bottomless portafilter, you can observe the flow rate, the color of the coffee liquid, and signs of channeling in real-time. This allows you to fine-tune grinding and tamping parameters promptly, ensuring that every cup of coffee delivers optimal flavor stability.

Seamless Machine Compatibility

Custom high precision CNC manufactured portafilters can fit seamlessly with mainstream commercial and household coffee machine group heads. Generally 58mm and 54mm sizes, and other sizes for specific designs. This meticulous approach effectively eliminates the sealing gaps and pressure leakage issues commonly found in standard portafilters.

Tailored Brand Solutions

Whether you’re involved in equipment R&D, aiming to match high-end brand aesthetics, or catering to specialty scenarios, we offer customization options for materials, optimized manufacturing processes, and different surface finishes to meet your specific needs.

custom cnc Bottomless Portafilter china

Kinsai Machining – Your Reliable China CNC Manufacturing Partner

As a direct manufacturer based in China, Kinsai Machining offers end-to-end manufacturing services for custom bottomless portafilters, maintaining dimensional tolerance within ±0.01mm. We pride ourselves on a quick response time, aiming to reply to all RFQs within 24 hours. Moreover, we place a high priority on IP Protection and are ready to sign a Non-Disclosure Agreement (NDA) to keep the confidentiality of your designs.

1. Precision Manufacturing in Phases

Prototyping: Using high precision CNC machining technology, we produce samples by using 304, or 316L stainless steel, 6061-T6 aluminum alloy, wood, and other materials as per request.
Mass Production: For mass production, we adopt combination of precision casting (investment casting) and CNC finishing manufacturing method. This way ensures 100% product consistency while optimizing both production efficiency about cost and quality.

2. Process Capabilities

Materials: We support a range of food-grade materials including 304/316L stainless steel, 6061-T6 aluminum, Wood, POM, etc ensuring compliance with food safety standards and long-term durability.
Surface Finishes: Our surface treatment options include mirror polish, multi-color anodizing, PVD plating, and electrophoresis, etc. All these finishes are highly corrosion-resistant and scratch-proof, preserving the aesthetic appeal and functionality of the portafilter over time.
Handles: Choose from a variety of handle materials such as walnut, maple, plastic, aluminum, etc. We also offer customization for ergonomic length and can add a heat-insulated grip design for enhanced user comfort.
Custom Logo: Laser engraving to add your logos, serial numbers, or other prints without compromising the structural integrity of the product.

Five Step OEM Customized Manufacturing

Submit your drawings: Send us your 2D/3D design drawings (preferably in STEP/IGES/PDF format), and specify your material preferences, order quantity, surface finishes, etc. An NDA can be signed at this time upon quote request.
Feasibility Evaluation & Quote: Our engineer will check your drawings carefully and do a manufacturing feasibility evaluation, and provide a quick quote, or suggestions, all within 24 hours.
CNC Prototypes: We’ll manufacture samples using precision CNC machining, allowing you to inspect the fit accuracy, surface finish, and actual extraction performance to verify your design.
Volume Manufacturing: For volume production orders, we may proceed with precision casting combined with CNC finishing, and implement 100% inspection to ensure consistent product quality at low cost.
Safe Shipping: Your products will be packaged in foam for maximum protection during transit, and we also provide global logistics services to your door if you need.