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Overview: How FDM 3D printing works?

The Basics Of FDM 3D Printing

Fused Deposition Modeling (FDM) is a 3D printing technology widely known for its speed, accuracy, and competitive cost. An FDM machine precisely extrudes melted plastic filament to create a part. FDM parts can be made in as fast as one day.

FDM
Benefits Of FDM 3D Printing

Fused deposition modeling can build fully functional parts in standard plastics. However, they have anisotropy in the z-direction (vertical direction) and a step-structure on the surface. Fused deposition modeling works with standard materials, for instance, ABS/PA/PC. Therefore, parts have good mechanical properties and are durable over time. Parts can be post-processed as any plastic part produced with conventional manufacturing.

FDM principle structure diagram

Features of FDM 3D Printing

Advantages
Precision
We use the most advanced industrial FDM 3D printers designed to meet tolerances of +/- 0.004” or +/- 0.002” per inch, whichever is greater.
Strength
FDM printed parts are available in a variety of high-performance plastics for applications that require resistance to the elements.
Large Build
FDM can produce FDM parts with large build volumes up to 24″ x 36″ x 36″
Rapid Turnaround
FDM parts do not require tooling which reduces the manufacturing lead time from weeks to days.
Real Thermoplastics
FDM has the highest variety of real engineered thermoplastics.
Part Production
FDM is capable of producing end-use parts on-demand, increasing throughput and helping you get to market faster.
Drawbacks
Surface Quality
Extruding material layer-by-layer,the surface has layer lines and fine details cannot be realized
Scale Effect
The unit cost and lead time will not be reduced as much as casted or molded parts.
Layer Adhesion
Parts have an anisotropy in the z-direction (vertical direction), and properties are weaker than base materials.

Our FDM 3D printing service

Requirement Specification
Maximum build size 500 x 500 x 500 mm (19.68'' x 19.68'' x 19.68'')*
Dimensional accuracy ± 0.5% with a lower limit on ± 0.5 mm (0.0196'')
Layer height 100-300 μm
Infill 20-100%

The table below depicts the general tolerances for industrial-grade Fused Deposition Modeling (FDM) services. Stresses during the build, support strategy and other geometry considerations may cause deviation in tolerances and flatness. Improved tolerances may be possible with a manual quote review, after successful completion of a prototype build, and must be approved on a case-by-case basis.

Our standard surface finishes

Here is a list of standard surface finishes. For custom surface finishes such as electroplating or polishing, please contact sales@pcbway.com.
Spray painting
Get painted according to the color pattern provided by the customer (Including matte paint, high-gloss paint, electroplating-imitation paint, varnish, leather paint,etc).
Spray painting
Polished
The surface texture is polished in a variety of ways to meet the actual needs of customers. The transparent parts can be polished accordingly to improve transparency and light transmittance.
Polished
Electroplating
Provide electroplating services, improve the overall strength of the parts, provide metal-like surface texture, and make it have certain metal characteristics.
Metal plating
Inlay nut
At the specific bottom hole position that needs to be processed, the internal thread is processed.
Inlay nut
Glazing assembly
The surface of the part is glazed to better imitate the appearance of handicrafts. Have mature assembly experience to ensure the overall display of the product.
Glazing assembly
Reinforced coating
The unique outer coating processing ability improves the strength of the product structure, reduces external wear, and can better avoid damage caused by normal storage and use.
Reinforced coating
Testing Service
A variety of measuring equipment provides reasonable measure services according to the actual needs of customers.
Testing Service

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