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SFIC lock cores

A Basic Guide to SFIC Lock Cores

Locks with interchangeable cores provide an added level of security and convenience. Small Format Interchangeable Core (SFIC) locks are a popular choice for commercial buildings and institutions as they allow for quick and easy rekeying. The SFIC lock cores can … Read more

tool and die manufacturing

A Basic Guide to Tool and Die Manufacturing

Manufacturing durable goods involves the use of tools, dies, and molds. The process of tool and die manufacturing entails cutting and shaping metal, as well as other materials, using tools, and employing metal forms called dies to stamp, forge, or … Read more

Blue and dark polymers

PVC vs. Acrylic Plastic: Their Difference

The prevalence of plastics is ubiquitous in our daily lives. Two types of transparent plastics frequently utilized for laminates are Acrylic (PMMA) and PVC. When deciding between the two, how do they differ, and which is the best choice? This … Read more

Machinist Tools for A CNC Machine Shop

Essential Machinist Tools for A CNC Machine Shop

Having a set of machinist tools is essential for any machinist, fabricator, or technician involved in manufacturing. However, with a plethora of tools on the market, it’s crucial to select the most effective and efficient ones for optimal productivity. Thus, … Read more

CNC spindle

Understanding CNC Spindle

CNC machines, such as lathes, mills, and routers, are comprised of several distinct parts. Among them, the spindle is a critical component that significantly affects the performance of the machine, ensuring that parts are produced accurately. Therefore, before deciding on … Read more


3D vs 2D CAD Drawing in CNC Machining

Back in the day, designers had limited tools at their disposal such as paper and pencils to create part drawings. However, the introduction and implementation of Computer-Aided Design (CAD) software revolutionized the design and production processes of the manufacturing industry. … Read more

Stainless Steel vs Titanium in CNC Machining

Titanium vs Stainless Steel in CNC Machining

CNC machining is a manufacturing process that is highly compatible with a wide variety of metal materials. Among these materials, stainless steel and titanium are two of the most commonly used when creating custom parts or prototypes. Both of these … Read more

Thread tap

Machining Threads

Threading parts is an essential element in metalwork. Manufacturers should not overlook the importance of using machining thread in their operations. There is a wide variety of connectors and fittings available in the global market, making it increasingly difficult to … Read more

CNC Turning Neoprene Rubber Grades

Grade Colour Temperature (°C) Shore Hardness Standard Black -40 to +100 81°A (±5) Other grades or plastics for your custom machined rubber parts are available upon request.

CNC Turning FKM Rubber Grades

Grade Colour Temperature (°C) Shore Hardness FDA, EU1935/2004 & EU10/2011 Approved Brown -25 to +220 85°A (±5) FDA & EU1935/2004 Approved White -25 to +210 84°A (±5) Standard Black -20 to +220 80°A (±5) Soft Black -25 to +220 74°A … Read more

CNC Turning Silicone Rubber

CNC Turning Silicone Rubber Grades

Grade Colour Temperature (°C) Shore Hardness FDA & EU1935/2004 Approved White -60 to +210 84°A (±5) FDA & EU1935/2004 Approved Blue -60 to +210 84°A (±5) FDA & EU1935/2004 Approved Red -60 to +210 83°A (±5) FDA & EU1935/2004 Approved … Read more

CNC Turning EPDM Rubber

CNC Turning EPDM Rubber Grades

Grade Colour Temperature (°C) Shore Hardness Standard Black -45 to +135 87°A (±5) WRAS Approved Black -50 to +135 97°A (±5) FDA & EU1935/2004 Approved White -55 to +135 88°A (±5) Soft Black -53 to +135 76°A (±5) Soft, FDA … Read more

CNC Turning Nitrile Rubber

CNC Turning Nitrile Rubber Grades

Grade Colour Temperature (°C) Shore Hardness Standard Black -35 to +110 85°A (±5) Hard Black -30 to +110 90°A (±5) FDA & EU1935/2004 Approved White -30 to +105 88°A (±5) Soft Black -35 to +110 73°A (±5) Low Temperature Black … Read more

CNC Turning Polyurethane

CNC Turning Polyurethane Grades – Hydrolysis Resistant

Grade Colour Temperature (°C) Shore Hardness FDA Approved* Red -30 to +115 94°A (±3) Standard Green -30 to +115 94°A (±3) Low Temperature Dark Blue -50 to +115 94°A (±3) Hard Dark Red -30 to +110 58°D (±3) Lubricated Black … Read more

CNC machining part

How Much Does CNC Machining Cost

CNC machining is one of the top-notch technologies in the manufacturing sector. In the past, milling was the most preferable manufacturing process when talking about metalworking. However, in the past few decades, CNC machining has taken its place. There are … Read more

Bolt grades

A Guide to Different Bolt Grades & Bolt Grades Chart

Bolts, also referred to as fasteners, are the components used to hold two objects tightly together. They come in a broad variety of different grades related to tensile strength. When selecting the exact bolt for an application, there are certain … Read more

Plastic Gauge Thickness

Plastic Gauge Thickness Chart

When it comes to working with plastic CNC machining or materials, the thickness of the plastic is an important factor to consider. If you are not sure how to convert plastic film thickness gauge measuring units, such as Mil, MM, … Read more

A Basic Guide to Large CNC Machining

Micromachining requires a high level of skill and expertise, not excepting CNC machining of large components that need specialized equipment large enough to process large-scale productions. However, large CNC machining may not be a straightforward process. There are lots of things to consider … Read more

Wood Properties for CNC Machining

A Basic Guide to Wood Properties for CNC Machining

CNC machining can be used to manufacture a wide range of products, including those made from wood. In CNC machining wood, a block of wood is placed into a CNC machine, and a tool (such as a router or a … Read more

The Top 12 Steels for CNC Machining

There are many alloy steels to consider for your project, but to help you make the right choice, we have compiled the top 12 steels available for CNC machining. These common steels listed in the table below all show moderate … Read more

bolt size chart

Bolts Size Chart

Bolts are an important fastener, often assembled together with nuts. Using bolts with the correct size is critical to the work of various equipment and machines. Here, we’ll see a complete bolt guide that covers bolt definitions, types, size, and … Read more

metal strength

Metal Strength Chart

The strength of a metal is an important factor in determining its suitability for a particular application. Stronger metals can be used in structural applications, such as in the construction of buildings, bridges, and other infrastructure, where they are subjected … Read more

metal rivet

Rivet and Eyelet Lengths Chart

Rivet size refers to the diameter of the shank, or body, of a rivet. Rivets are fasteners that are used to join two or more pieces of material together by inserting a smooth, cylindrical shaft through holes in the materials … Read more

CNC machining copper

Summary of Two Main Grades of Copper

Mechanical Property Copper C110 Copper C101 Ultimate tensile strength 220 – 230 MPa 310 – 380 MPa Yield strength 69 – 140 MPa 185 – 340 MPa Young’s modulus(modulus of elasticity) 115 – 120 GPa 125 – 135 GPa Elongation … Read more

sheet metal

Sheet Metal Gauge Chart

Sheet metal gauge charts typically lists the gauge size and the corresponding thickness of the sheet metal in inches or millimeters. They are often used by fabricators, manufacturers, and engineers when specifying the size of sheet metal for a project. … Read more


Nail Size Chart

Standard nail sizes refer to the dimensions of nails, including their length and diameter. The size of a nail is typically expressed in inches or millimeters and is determined by the specific application and the materials being fastened. In the … Read more

screw thread

Screw Thread Sizes Chart

Thread size refers to the diameter and pitch (distance between threads) of a screw thread. In the metric system, the thread size is specified by the combination of the thread’s diameter (in millimeters) and pitch (in millimeters). For example, a … Read more

boot cover

Boot Covers

Custom boot covers are available as you fill out an RFQ.

Leveler Strength Single Joint

Leveler Strength Single

Leveler Strength Single Joints designed by Runsom are ideal for extreme torque applications with improved mechanical properties and manufacturing processes, making an increase in the strength and working life of these joints. Similar to the high-strength series, they have a … Read more

Cross-type needle bearing joints

Cross-Type Needle-Bearing, Stainless

Cross-type needle-bearing stainless steel joints are high-precision universal joints used in sanitary or corrosive environments. They retain minimal backlash over extended periods. They feature roller bearings to lower friction and extend lifespan in continuous operations and high RPM. Features Specifications … Read more

CNC machining tolerance

CNC Machining Tolerances: Common Types and Factors to Consider

The degrees of accuracy that may be achieved with CNC machines are exceedingly high. Certain machines have the capability of achieving accuracies of up to +/-0.0025mm. Milling a component on a CNC machine at the highest accuracy requires a significant … Read more

Selection from six grades of steel for CNC machining

Summary of Six Main Grades of Steel

Mechanical Property 1018 4130 4140 1045 1215 4340 Tensile Strength, Yield (MPa) 310 460 655 450 415 470 Shear Modulus (GPa) 78 80 80 60 80 74 Elongation at Break (%) 20 21.5 25.7 12 10 22 Hardness (Brinell) 131 … Read more

Selection from three grades of titanium for CNC machining

Summary of Three Main Grades of Titanium

Mechanical Property Titanium Grade 1 Titanium Grade 2 Titanium Grade 5 | 3.7164 | Ti6Al4V Ultimate tensile strength 240 MPa 344 – 420 MPa 950 MPa Yield strength 170 – 310 MPa 275 – 410 MPa 880 MPa Young’s modulus(modulus … Read more

Main Grades of Stainless Steel Available at Runsom

Summary of Six Main Grades of Stainless Steel

303 304 316 416 17-4PH 15-5 Ultimate tensile strength 528 – 639 MPa 480 – 620 MPa 480 – 620 MPa 741 – 1400 MPa 896 – 990 MPa 890 – 1490 MPa Elongation at break 35 – 55 % … Read more

Selection from four grades of brass for CNC machining

Summary of Four Main Grades of Brass

Mechanical Property C230 C260 C360 C353 Tensile strength 40-85.6 ksi 62 kpsi 58 kpsi 49-85 kpsi Modulus of Elasticity 15,900 ksi 16,000 ksi 14,000 ksi   15,200 ksi Elongation at break 5% 23% 53% 52 % Hardness(per Rockwell scale) B77 B77 B35 B65 … Read more

Selection from six grades of aluminum for CNC machining

Summary of Six Main Grades of Aluminum

Mechanical Property 6061 6082 6063 7075 2024 5052 Ultimate tensile strength 310 MPa 140-340 MPa 110-300 MPa 434-580 MPa 200-540 MPa 190-320 MPa Elongation at break 17% 6.3-18% 12 % 10-15% 14-20% 2-22% Modulus of elasticity 68.9 GPa 69-71 GPa … Read more

Comparison of different prototyping processes

Process CNC Machining 3D Printing Injection Molding Die Casting Sheet Metal Advantages •Tight tolerance•High quality •Complex geometry•High resistance •Scalability •High repeatability •Near-net final shapes Mass production of thin, complexly shaped products •Make XL parts easily•Wide range of forming processes Disadvantages •Raw … Read more

Passivation of Stainless Steel

Passivation of Stainless Steel Parts

Often, there are some questions frequently asked by machine shops and manufacturers of various part materials, including stainless steel, titanium, and tantalum. These incorporate questions such as “what is passivation,” “how does passivation work,” and “how to passivate stainless steel … Read more

Industrial 3D Printing for Production of Parts

3D printing is among the leading manufacturing processes, also known as an additive process, paradox to the CNC machining, a subtractive process. Having lingered the stereotype of being merely a ‘prototype,’ industrial 3D printing has emerged as a proper manufacturing … Read more

CNC Machining Design Guide

The definition of CNC machining Generally speaking, computer numerical control (CNC) machining is a deduction manufacturing technique that produces finished parts by removing layers from solid blocks called blanks. CNC milling, one of the main types of CNC machining, using cutting tool … Read more

Design Tips for Minimizing CNC Machining Cost

Once you are searching for a CNC machined prototype or preparing your high volume parts production, one important issue you need to consider is the CNC parts manufacturing cost. There is no doubt that CNC design is the critical factor affect final pricing … Read more

3D printing Design Consideration

Various 3D printing processes are different in capabilities and design restrictions, but there are same key design considerations of all 3D printing processes. If you have finish your 3D designing  and modeling, keep this information graphic for a quick reference. … Read more

SLS Design Guideline

Selective Laser Sintering (SLS) is a suitable manufacturing technology for functional products with complex geometries. It has fewer design limitation than other 3D printing technologies. In addition, this technology is also suitable for batch production. We will introduce the advantages of … Read more

SLA Design Guideline

Stereolithography (SLA) is a 3D printing process with photopolymer resin solidified by laser system. It is most suitable for small size parts with fine details and high tolerance. We will introduce SLA printing process, SLA advantages and limitations, and finally SLA design … Read more

FDM Design Guideline

Introduction FDM (Fused Deposition Modeling) 3D printing technology is the most affordable method for rapid and low-cost prototyping. Its products is suitable for various application, including functional parts like enclosure. However, in order to guarantee FDM parts quality, we need to … Read more

DMLS Design Guideline

DMLS is a rapid manufacturing process, as metal additive manufactured parts are applied in various industry areas. Its great design freedom, component simplification and consolidation are best suitable for custom or medium volume parts production. DMLS printing process DMLS is a … Read more

Complex Features Control in CNC machining

As rapid development of CNC machining, CNC machines have grater production capabilities in every year. CNC cutting tools can mill various shape and drill radial hole in once operation process, which is normal required separate drilling and milling process. As most … Read more

Avoid Mistakes in CNC Design

Once you upload your CAD file to our quotation system, our engineering tea will analyse our design and provide you the most cost-effective solution. As CNC machining has ability to produce various geometry parts, there are still some critical element we should … Read more

Tips for Optimizing CNC Design

Optimize CNC Design

In order to guarantee prototypes and production parts manufacturing process fast and cost-effective, we need to balance the capabilities of CNC machining and optimized part designs. There are several critical considerations in CNC designing process for our milling and turning process, which will accelerate production cycle time and … Read more

Injection Molding Design Guideline

In order to guarantee final product quality and repeatability in injection molding process, we need to consider several factors in injection molding designing. There are certain design guidelines to yield full benefit of injection molding. In this blog, we outline common … Read more

Tips to Reduce Injection Molding Cost

There are many cost drivers in injection molding, in order to reduce the final cost of your projects, we analyze the main factors in injection molding, and summarize some actionable design tips in parts designing process. Cost Drivers The main cost … Read more

Optimal Shell and Infill Parameters for FDM

Introduction Most FDM parts are not fully solid, this will reduce total amounts of materials and printing time, finally result to economical printing cost. In order to optimize the FDM printing process, solid shells and addition with infill will play an … Read more

FDM Materials Comparing

As new materials emergence rapidly in 3D printing market, it is difficult to select the best suitable material for specific objects. In FDM, PLA and ABS are two main polymer in application, while new polymers are still play a major role in the … Read more

Geometry Restrictions in 3D Printing

Introduction In 3D printing process, we should consider the size and geometric restrictions in manufacturing process, and determine whether 3D models are suitable for 3D printing technology. These considerations are widely apply to any CAD designs, form basic mechanical parts to complex … Read more

MJF Design Guideline

Introduction MJF is one of the most accurate 3D printing technologies for high detail parts production. It can offer full colors and multi-materials with smooth surface finish. This is widely used for realistic prototypes and models, but not used for functional applications in … Read more

Binder Jetting Design Guideline

Introduction Binder Jetting has multiple capabilities in diverse production of functional metal parts, full-color prototypes, figurines and large sand casting. We will introduce the mechanics, characteristics and key benefit of Binder Jetting. Binder Jetting Process Binder Jetting create parts with adhesive layer-by-layer … Read more