This article explains how plastic electroplating makes plastic look like metal, using either electroplating (for ABS) or vacuum deposition (for various plastics). SG PROT follows a clean-coat-protect workflow and provides quotes within 24 hours after reviewing 3D files.

Knurling is a specialised finishing process that enhances grip, functionality, and aesthetics of cylindrical components. This article introduces common knurling types—including straight, diagonal, diamond, and crisscross patterns—along with SG Prototype’s machining experience, dimensional allowances, and real application cases. Knurling is widely used for functional validation and appearance evaluation, helping prototypes closely match mass-produced parts and reduce design ri

Flatness defects are a frequent challenge in CNC metal machining, affecting both appearance and dimensional accuracy. This guide explains the key causes—including machine misalignment, material stress, improper clamping, tool wear, and environmental factors—and offers practical solutions such as stress-relief machining, proper fixturing, and optimized cutting parameters. By refining processes and managing internal stress, manufacturers can significantly enhance flatness preci

This guide introduces the most common CNC cutting tools used in metal machining and explains their functions and best practices. It covers chamfer cutters for edge finishing, center drills for accurate hole positioning, reamers for precision hole sizing, taps for internal threading, and twist drills for general hole-making. Each section includes practical usage tips to improve machining accuracy, tool life, and overall production quality.

This guide introduces the most widely used CNC milling cutters and their key applications in rapid prototyping and custom manufacturing. It covers flat end mills for sharp edges and pockets, ball end mills for curved surfaces, bull-nose cutters for durable 3D roughing, face mills for fast material removal, T-slot cutters for undercuts, and keyseat cutters for precision keyways. Selecting the right cutter directly enhances machining accuracy, surface finish, and efficiency—cru

External-threaded injection molded parts are essential in many industries, offering reliable connections and functional performance. This case study explains how precise mold design—using threaded rings, side core pulling, or inclined ejector pins—ensures flawless demolding and thread accuracy. Discover how SG Proto maintains tight quality control for every detail in the injection molding process.

Copper electrodes play a vital role in EDM mold cavity machining, offering exceptional precision and conductivity. From material selection to spark erosion machining, they ensure accurate and efficient mold fabrication—making them essential for producing high-quality molds.

SG PROTO utilized two-shot injection molding to create a high-precision shell for a European home appliance manufacturer. By combining PC and ABS materials, we achieved excellent transparency, impact strength, and color contrast. Through optimized mold design and process parameters, we ensured dimensional accuracy and perfect material adhesion. Compared to traditional overmolding, two-shot molding reduces production steps and cost while enhancing the product's premium look.