Resources

Here you can find a collection of articles with general information on CNC machining, engineering, materials, machined parts design and more!

How to Finish an Aluminium CNC Machined Part

In addition to the wide range of physical and mechanical properties that aluminium alloys offers, aluminium parts can be finished in a variety of ways. These are some of the most common ones.

Why Should You Consider Using Aluminium for Your CNC Machined Parts

Aluminium is the second most plentiful metallic element on earth. In its pure or alloyed form, aluminium is also the second most widely used metallic material after steels. Among the most striking characteristics of aluminium is its versatility.

CNC machined bicycle suspension component

Which Aluminium Alloy Should I Choose for my CNC Machined Parts?

Aluminium alloys can be machined rapidly and economically. Nevertheless, some alloys are more common than others when it comes to their use in CNC machined parts.

Aluminium Extrusions

How to Specify a Temper When Choosing an Aluminium Alloy

Since the properties of aluminium alloys are so influenced by work hardening and heat treatment, the temper (strengthening treatment, if any) must be designated in addition to the alloy composition code.

Tolerances in machining; 2D Drawing

How to Specify General Tolerances in Machined Parts

There is variability in any manufacturing process and, as such, tolerances are used to set permissible limits on this variability.

CNC milling machine

Crash Course in Machining – Machine Spindles​

The machine tool spindle provides the relative motion between the cutting tool and the workpiece which is necessary to perform a material removal operation.

A workshop with CNC machining centers

Crash Course in Machining – Machining and turning centers​

A machining center is a highly automated machine tool capable of performing multiple machining operations under computer numerical control (CNC) in one setup with minimal human attention.

Aluminium Extrusions

Understanding Wrought Aluminium Alloys Designations

The wrought alloy designation system consists of four numerical digits, sometimes preceded by a capital letter. The first digit indicates the principal alloying elements, as described next; the second digit is the variation of that alloy; and the last two digits represent the specific alloy designation.

CNC tool holders

Crash Course in Machining – Tool Tapers​

A tool holder for milling has three main parts: the taper, the flange and the collet pocket. The taper is the conical part that is introduced into the spindle.

Surface roughness measurement

Surface Characteristics of CNC Machined Parts

The quality of a machined surface is becoming important to satisfy the increasing demands of component performance and reliability.

A set of CNC machined parts on a workbench in front of a CNC machining center

Tips on Designing Parts for Machining

In this article we'll go over some of the top tips on how you can improve your designs and decrease cost while optimising your parts for manufacturing using CNC machining.

Precision engineering CMM measurement

Precision Engineering – Accuracy vs. Precision​​

It is impossible to manufacture workpieces without deviations from the nominal shape. When these deviations are too large, the usability of the workpiece for its purpose will be impaired. Control and measurement of these deviations is therefore critical.

Crash Course in Machining – Milling

Milling is a machining operation in which a workpart is fed past a rotating cylindrical tool with multiple cutting edges.

CNC turning

Crash Course in Machining – Turning

Turning is a machining process in which a single-point tool removes material from the surface of a rotating workpiece. The tool is fed linearly in a direction parallel to the axis of rotation to generate a cylindrical geometry.

At CNC Proto we specialise in the machining of non-ferrous metals, mostly 6000 and 7000 series aluminium alloys, and engineering plastics. For an overview of our services, please visit our Services page. If you prefer to see some examples of the work we do, feel free to check our Machined Parts Gallery!

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