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The VMT blog is dedicated to sharing our hard-earned knowledge in prototype manufacturing. We hope these articles will help you optimize your product designs and gain deeper insight into the world of rapid prototyping. Enjoy the read!
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2026 02 13 In this article, the sand casting process, its modern evolution, and its unique advantages — and comparison between sand casting and other typical manufacturing processes will be introduced. These can provide you with a fully and clear understanding of the sand casting trade-offs in surface precision, material range, part size, cost, and production scale.
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VMT 2026 02 11 Bright nickel plating serves as decorative coatings or primer for nickel-chromium plating surface treatment and is extensively utilized for stainless steel CNC machined parts, brass CNC machined parts, and more. From automotive components and hardware to high-precision electronic elements, a bright nickel finish enhances the aesthetic luster of these parts, fills microscopic depressions or flaws, and also contributes to corrosion and wear resistance. Furthermore, this coating offers good electrical conductivity. In this article, we will explore the applications of bright nickel plating in CNC machined parts, detailing how this surface treatment process is applied and its ultimate impact on the quality of your finished products.
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VMT 2026 02 09 Of the many carbon and alloy steels available, both 5160 steel vs 1055 steel can be used to manufacture different sword or knife tools, general engineering parts like gears, sprockets, and couplings. But for medium carbon steel 1055(AISI 1055) with about 0.55% carbon content, it has high toughness and hardness with far better machinability while 5160 high-carbon alloy steel(AISI 5160) with about 0.6% carbon content and 0.8% chromium has higher toughness, hardness, and much better elasticity; and this is why 5160 steel also called spring steel. These "structural steel" or "steel for mechanical parts" are different from their chemical composition and then lead to properties, heat treatment, welding, machining differences although they share parts of same characteristics; and these are what this article is aiming at sharing.
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VMT 2026 02 08 Stainless steel is performed actively among many industrial uses like the most daily cookware, decorative trims, industrial fasteners, and electronic metallic housings. For these applications, all of them can be manufactured by 430 stainless steel, as a more cost-effective material alternative to 304 stainless steels; while SS 430 shows other properties that SS304 doesn't have: like magnetism, good electromagnetic induction and temperature resistance. This article demonstrates key characteristics and uses of 430 grade stainless steel, analyzing its properties and manufacturing features as well as comparing it to SS304 to explain why and when you may choose SS430 as a better alternative to SS304.
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VMT 2026 02 07 As a well-known free-cutting brass HPb59-1(also called 59-1 brass or HPb59-1 copper), it is the material that combines high-speed production with excellent durability. From automotive manufacturing to electronic parts, high precision brass parts are made by CNC machining due to its excellent machinability. For other HPb59-1 manufacturing, hot forging process and welding are also quite suitable for this 59-1 brass. This versatile HPb59-1 brass with acceptable strength and corrosion resistance is what we will discuss in this article—its equivalents, composition and properties, applications and manufacturing notes of 59-1 brass’ CNC machining, hot forging and welding. Read on to get better engineering insights for your design and manufacturing needs.
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VMT 2026 02 06 This guide will provide a comprehensive understanding of CuZn39Pb2 brass, exploring its chemical composition, key characteristics and properties, applications and cost, environmental considerations, equivalents, and alternative materials.
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VMT 2026 02 05 As an alloy-low carbon steel, 4130 steel distinguishes itself from other common low-carbon steels because of the alloying elements’ addition of chromium and molybdenum. These alloying elements enhance its strength, corrosion resistance, wear resistance, and scratch resistance; Chromium element simultaneously improves the hardenability of 4130 steel, making it far more responsive to heat treatment processes than other carbon steel families. This article explores this versatile steel—good for its excellent machinability, superior weldability, and high strength-to-weight ratio—which has become a well-suited choice in aerospace, automotive, and precision component manufacturing. Read on to learn more about AISI 4130 alloy steel.
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VMT 2026 02 04 Known for its signature "hard case and tough core," 8620 alloy steel inherently possesses exceptional toughness, impact resistance, and structural strength. Due to its low carbon content (approximately 0.20%), 8620 steel exhibits relatively low hardness in its raw, untreated state. However, once subjected to the heat treatment of carburizing (Case Hardening), it develops a high-hardness, wear-resistant carbide surface layer. This process compensates for its initial softness, providing good resistance to wear and galling, making it an ideal candidate for high-stress components like gears, cams, and pins. This article explores AISI 8620 steel—a low-carbon alloy steel favored for CNC machined parts due to its excellent balance of machinability, weldability, and impact resistance. Read on to learn AISI 8620 alloy steel more.
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