FDM, SLA, SLS, SLM? What does it all mean?

Like many industries, I’ve found that the 3D printing world loves acronyms!

So we’re going to be breaking down the terminology here, into very straightforward explanations, too simple for some, but very helpful for the many people that just don’t know what any of it means.

Firstly, CAD.

It’s fitting that we discuss CAD first, as we always need a CAD (Computer Aided Design) file before we can get the 3D printer involved.

This is a 3D computer file, like a PDF, or Word document, except it just stores the information about an objects shape and size, we need this to 3D print something. Common file types are .STEP .STL and .OBJ, but our instant quoting tool can read many different file types, so don’t worry.

You can send us your design, or we can build it for you based off photos, specifications, drawings or a reference object.

Secondly, 3D Scanning.

3D scanning is a process which involves taking lots of photos of a 3D object, in order to build a CAD file, which is a copy of something that already physically exists. We use our 3D scanner on a lot of jobs that require replacement parts or obsolete components.

3D scanning can be used to make exact copied of objects, or to use as a reference while designing something that has to fit onto or into a specific application.

Now, FDM.

FDM (Fused Deposition Modelling), also sometimes referred to as FFF (Fused Filament Fabrication), is the most accessible and affordable 3D printing technology.
It involves pulling plastic cord from a reel/spool, and pushing it through a hot nozzle, this melts the plastic to a liquid, and the 3D printer then draws the shape that you want to print, while leaving lines of melted plastic behind the path of the nozzle.

This is a simple type of 3D printing, and is great for prototypes and simple household objects! However the product won’t be as strong, smooth or high quality as other types of printing, so this limits FDM from being used to produce a lot of consumer products.

FDM printers are affordable, can often print in multiple colours, and almost always print things hollow, which saves on material and print time!

James Birkett - CEO of Flex 3D Printing Ltd

With 10 years of 3D product design and Mechanical Engineering Experience, and thousands of 3D prints completed, I am very confident with the design and production of additive manufactured components and products.