KT Metal Castings Blogs

Silica sand is essentially pure quartz that’s been broken down into tiny grains over millions of years through natural weathering processes. Unlike the sand you find at most beaches, silica sand contains at least 95% silicon dioxide (SiO2), making it incredibly valuable for industrial applications. Think of silica sand as…

Yes, you can reuse sand from sand casting multiple times. Most foundries reuse up to 98% of their casting sand, replacing only 2% with fresh sand daily to maintain quality. The number of reuse cycles depends on the sand type. Green sand (clay-bonded) lasts 20-30 cycles, while resin-bonded sand only…

Grinding media are the materials used inside ball mills, bead mills, and other grinding equipment to break down raw materials into smaller particles. The five main types include forged steel balls, cast iron balls, stainless steel balls, ceramic media (alumina, zirconia, zirconium silicate), and glass beads. Each type offers specific…

In industrial metal manufacturing, deburring and polishing are often mentioned in the same breath — and for good reason. Both are finishing processes that improve the quality, performance, and appearance of metal parts. Yet, they serve very different purposes, occur at different stages of production, and use different tools and…

Grinding is a precision machining process that uses a rotating abrasive wheel to remove material from a workpiece. Unlike single-point cutting tools, each abrasive grain acts as a small cutting edge, gradually shearing away microscopic chips. Different grinding methods vary in how the workpiece and wheel move relative to each…

In metal manufacturing, the journey from raw stock to a finished, high-performing component is rarely complete after the initial shaping. Two finishing processes—grinding and deburring—play critical roles in ensuring that parts meet design specifications. They are often confused because both involve refining a part’s surface. But here’s the key: grinding…

Every drilled hole leaves behind a nasty surprise. Those tiny, razor-sharp metal edges called burrs might look harmless, but they’ll slice your fingers open faster than you can say “where’s the Band-Aid?” Here’s the thing most beginners don’t realize: burrs aren’t just a safety hazard. They cause parts to fit…

Deburring is the process of removing small, unwanted pieces of metal from the edges or surfaces of a cast part. These unwanted pieces are called burrs or flash. They are a normal by-product of casting and other manufacturing processes. Deburring takes place after the casting is removed from its mold…

In manufacturing, a small design detail can make the difference between a smooth assembly and a costly production delay. One of the most overlooked yet critical choices is whether to use a tapped hole or a drilled hole. A drilled hole is simply an unthreaded opening created by removing material…

In machining, using the wrong term on a drawing can trigger the wrong setup on the shop floor — leading to wasted time, scrapped parts, or expensive rework. One of the most common sources of confusion? The difference between a tapped hole and a threaded hole. Every tapped hole is…