Painting Plastic Parts for Finish Quality and Assembly Fit
An engineering guide to painting CNC-machined, injection-molded, 3D-printed and vacuum-cast plastic parts, with practical guidance on appearance approval, coating allowance, assembly fit and inspection.
Aluminum Anodizing for CNC Machined Parts: Type II, Type III and Dimensional Allowance
Anodizing changes both appearance and dimensions. Learn how alloy, coating type, masking, sealing and critical fits should be controlled from drawing through final inspection.
EDM Machining Guide: Process Selection, Accuracy and Cost Control
EDM can produce conductive metal features that are difficult to reach with conventional cutting tools, but the process is not one universal method. This guide compares wire, sinker and hole-drilling EDM and explains how geometry, spark energy, dielectric condition, flushing, electrode wear, skim cuts and inspection affect accuracy, surface integrity, lead time and cost.
Gear Machining Guide: Processes, Accuracy and DFM
Reliable gear manufacturing begins with complete gear data and an agreed inspection method. This guide compares hobbing, shaping, power skiving, milling, broaching, grinding and honing, then explains how material, heat treatment, datums, tool wear and measurement affect the finished gear.
Extrusion Molding-Understand Structural Design & Defects to Avoid
Extrusion molding is one of the most cost-effective, high-volume manufacturing processes for producing continuous cross-sectional profiles from plastics, aluminum, rubber, and composite materials. Widely used in construction profiles, automotive trim, industrial tubing, and consumer accessories, the quality, dimensional stability, and yield of extruded parts depend heavily on rational structural design and standardized process control. Poor […]
Pricing Factors & Cost Analysis of Prototype Machining
Why Prototype Machining Costs Exceed Mass Production Prices Many customers question why the unit price for single-piece or small-batch prototype machining is much higher than that of mass production, which stems from fundamental differences in production mode, cost allocation and process setup. Price gap between prototype and mass production Mass production adopts standardized assembly-line operation. […]
Why CMM Inspection Defines Modern Quality Standards
The Indispensable Role of CMM in Precision Manufacturing In today’s competitive manufacturing landscape, precision is not an option—it is a necessity. Coordinate Measuring Machines (CMM) have emerged as the gold standard for dimensional verification, acting as the “eyes of industry” that bridge digital design intent and physical part reality. Unlike traditional tools such as calipers […]
Overcoming the Challenges of MIM & CNC Machining for Precision Internal Corners
Introduction: The Precision Roadblock in Your MIM Project At Samshion, we often encounter a familiar challenge in metal component manufacturing: the gap between the theoretical capabilities of Metal Injection Molding (MIM) and the practical limits of post-process CNC machining, especially for tight internal radius. As shown in this project, even when MIM delivers a near-net-shape […]
An In-Depth Overview of Reamers: Classification, Applications, and Design Principles
Over years of supporting global customers in CNC machining and precision tooling, the Samshion team has accumulated extensive hands-on experience with reamers, hole-finishing processes, and tolerance control. In actual production—whether dealing with small-batch prototypes or high-volume precision components—we consistently observe that the correct choice of reamer type, reaming allowance, cutting parameters, and tool material directly […]
Is Laser Engraving Worth It for Your Business in 2025? | ROI & Insights
In this post, we’ll break down the costs, benefits, and potential of laser engravers, and how to use lasers to create personalized engravings for custom business.At Samshion, our team has extensive experience in rapid prototyping and precision machining. We provide professional manufacturing services to meet the products requirement of hobbyists and businesses. If you’ve ever […]