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3D Printing Technology

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3d printing in Fused Filament Fabrication technology

FFF technology (3d Fused Filament Fabrication) is the 3d printing technology that allows you to print three-dimensional objects with adduction of material.

La stampante 3d FFF funziona fondendo e poi estrudendo attraverso un sottile ugello chiamato “;nozzle”; a plastic filament generically 1.75mm in diameter.

Our machines use the FDM system (Fused Deposition Modeling), now renamed FFF (Fused Filament Fabrication). This 3d printing technology is the one used in ours 3d printers open source developed after 2010, after the patent expired.

Consequently, the FDM system is currently one of the most widespread and also the cheapest way to print three-dimensional objects..

3d printing technology Fused Filament Fabrication (FFF)

3D printers in FFF technology extrude a molten plastic filament between 180 and 260 ° C.

La stampante 3D per comporre un oggetto tridimensionale sovrappone diversi strati di materiale plastico che nel loro insieme rappresentano il volume dell’;object to be manufactured.

I materiali utilizzabili per la stampa 3d sono tanti e sempre in costante evoluzione infatti potete disporre di diverse plastiche come l’;ecological PLA (polylactic acid). It is a non-toxic and biodegradable polymer of vegetable origin, which allows you to easily produce finished objects, di bell’;appearance and large.

Density of materials for 3d printing
Graph of the density in grams of the materials used for 3d printing

Robust and heat-resistant objects must be printed with special technical filaments:

; PLA-Carbon, it is a material obtained by adding a certain percentage of carbon fibers to the normal pla to significantly increase its hardness and mechanical toughness compared to the standard material.

; PETG, or the Pet Glycolate, derivato dal pet tradizionale usato nei contenitori alimentari ma con l’;addition of glycolate. E’; a non-toxic plastic polymer that maintains all the advantages of PLA but has better thermal and mechanical resistance.

In fact, this polymer has a good ease of printing, a moderate extrusion temperature, a low tendency to retreat, deformation and detachment content.

At the same time, like ABS, PETG offers great mechanical resistance, flexibility and the possibility of performing post-production processes.

PETG is therefore the ideal material for large prints, in fact it is resistant to acids / bases, solvents, sali, was, then it is well suited for technical applications.

Other materials resistant to mechanical stress and high temperatures are the following:

; L’; ABS composed of acrylonitrile-butadiene-styrene is another plastic polymer widely used in 3D printing when you want to obtain sturdy parts that have to withstand strong mechanical stresses and relatively high temperatures.

In comparison to the common PLA, l’;ABS is less brittle, and consequently it must be extruded at high temperatures (240-250 °C), in addition, a printing surface heated to at least 100 ° C is also needed to avoid detachment.

Dopo la stampa l’;ABS can be easily sanded and polished with acetone vapors, così da ridurre o eliminare del tutto l’;layered appearance of printed objects.

Riguardo l’;ABS there are also some important safety aspects to consider, infatti durante l’;hot extrusion releases toxic micro-dust as well as giving off a very unpleasant odor.

; Nylon is a material from the family of synthetic polyamides that allows to produce resistant objects, flexible and long lasting but which must be extruded at relevant temperatures, in practice over 250 .

However, nylon cannot be extruded with 3D printers not equipped with completely metal extruders, therefore capable of reaching temperatures even higher than 260 ° C without being damaged.

On the other hand, Nylon is particularly sensitive to humidity, therefore the coils must be kept in airtight bags, tends to deform during printing,

Nylon does not require the use of heated surfaces and can also be colored as desired after 3D printing with colors usually used in fabrics.

Exotic 3D filaments with special physicochemical properties

Exotic 3D filaments are composite materials where variable percentages of wood dust are integrated into a base polymer, marble or metals.

l’;use of these particular plastics allows you to obtain reproductions of objects very similar to some materials that you would like to emulate, among these we have:

; Soluble materials, like HIPS or PVA

; Flexible materials like TPU, l FPU etc.

If you are interested in ours 3d printing services and you want advice on the type of material, contact us at the numbers: 333-7602601 / 070-810664