FDM – Fused Deposition Modeling

Fused deposition modeling, or FDM, is a rapid prototyping technology (aka rapid manufacturing) and is used to convert CAD drawings into physical parts. FDM Prototypes produce ABS Plastic Prototype Models, which have high strength and durability. For a full list of different Rapid Prototyping Technologies including FDM.

How FDM Works

The FDM fused deposition model process is additive which extrudes material in layers. A plastic filament is melted and extruded through a heated nozzle. The nozzle moves to produce a profile of the part then moves down and the next layer is built on top until the entire prototype model is fully built. The model is complete and requires no hardening. FDM is an excellent choice for any 3D Model that needs to closely represent the final product in strength and durability. We are currently using ABSplus material. CAD Models can be produced in about 24 hours depending on the size and complexity. Online price quotes are available for FDM parts.

FDM requires support during the Prototype Model building process and can increase the build time, parts such as architectural models can be built with the 3DP 3D Printing Prototype method which uses not support. Complex models with overhangs are not a good fit for FDM Fused Deposition Modeling.

Technical Details


ABSplus Material Properties Sheet

FDM plastic is available in the following Colors:

Black, White, Red, Yellow, Green, Blue, Gray.

Layer Resolution

.245 mm (.010 in.) or .33 mm. (.013 in.) of precisely deposited ABS and support material.


Our standard finishing for FDM parts consists of complete support removal. Additional finsihing, such as sanding and painting, are available on request.

Build Envelope

203 x 203 x 305 mm

(8 x 8 x 12 inches) Larger parts can be built in peices and assembled during the finishing process.

Additional Information

FDM has been the Rapid Prototype technology of choice since 2002 because of its ease of use and high strength 3D CAD models and the flexibility of Plastic Prototypes such as drilling sanding and even chrome plating. FDM prototypes have become the preferred choice among designers, engineers, researchers, students and many other areas that use rapid prototyping. Fused Deposition Modeling is the most economical method to produce plastic prototypes and abs models.

Polyether ether ketone (PEEK) plastic

PEEK, which an aromatic crystalline thermoplastic polymer material, the melting point of 334 ℃, the following is a charming feature: short-term heat resistance by adding glass fiber or carbon acid after heat distortion temperature up to above 300 ℃; long-term heat resistance index for the UL 250 ℃; toughness, resistance, However, up to UL-0 level, can be self-extinguishing, and smokeless; resistance to drugs of good performance, only soluble in concentrated sulfuric acid. Another good processing behavior, its also resistance to radiation, resistance to peeling, electrical properties, fatigue resistance, impact resistance wear resistance, hydrolysis resistance and other properties are very good, which is a rare engineering plastic. 

PEEK injection molding is an important part of medical, industry, electronics, etc. if you need PEEK molding parts for your project, you are welcome to contact us, we have done lots of this PEEK molded parts, PPSU molding parts, PEI molding parts, etc.

Because of its good overall performance, they are widely used: 

    Extrusion: the magnet wire coating using PEEK has good machinability and good resistance to peel, good abrasion resistance and good resistance to radiation and strong, free coloring, etc. have been used as a cable, wire insulation, and protection layer. Widely used in atomic energy, aircraft, ships, oil, gas, magnet wire, fiber optics, and other fields; films use its moisture absorption of small, acid-resistant solder, etc., for H-class and C class insulation material widely used in motors, generators, transformer insulating film, and orbit of printed circuit board, the carrier belt, heat resistant with other drugs ring; PEEK monofilament fiber using steam-resistant, anti-drugs, wear resistance, creep resistance, toughness, etc. Paper machine drying applied to canvas, heat Shanghai cloth, racket cable, composite materials, heat-resistant woven with other drugs. Injection molding: the wear-resistant materials, its wear resistance, resistance to drugs, toughness, and can be used at 250 ℃, etc. for the manufacture of bearing cage, the metal bearing the protection lining, clutch parts, power brake vacuum parts, gasoline engines parts, wheels loader blade, copier parts, suspension bearings, engine Putters; electrical and electronic use of its resistance to solder, natural resistance, UL temperature index of high toughness and good, for the manufacture of inserts plugs, high-reliability plug-ins, cable plugs, junction boxes, wiring leads to the first, the battery case, IC packaging and so on. Hot water equipment for the manufacture of hot water, chemical pump impeller and pump body and the other parts, clean the valve, oil extraction, socket connector, PH meter boiler jacket and so on.

Contact us for your PEEK plastic injection molding project, we will offer you the best quality and price, this is one of the hardest material to mold, but we are professional.

How to Improve Plastic Injection Products Bubbles Issue

Bubbles issues are also know as vacuum bubbles, in which gases are very thin. In general, if the bubbles happen at the moment when you open the moulds, the bubble is a matter of gas interference. Vacuum bubbles are formed, because the plastics fillings are insufficient or pressure is low. 

(1) Increase injection volumes; adjust injection speeds, holding pressure and temperatures of injection materials; increase the moulds’ temperature to improve short shots of the products.
(2) Place the pouring gate at the thick part of the workpiece; improve flow conditions of nozzles, runners and pouring gates; reduce consumption of flow.
(3) Improve exhaust conditions of the moulds.
(4) Avoid great differences of the products’ wall thicknesses. 
(5) Improve structures of injection molded products to avoid great differences of the cavities’ parts which can be filled with molten plastics.
(6) Reasonably adjust the molding process to avoid impacts on the plastic moulded products due to gases generated by plastic degradation.

Size changes of plastic products are caused by different shrinkage of the plastics essentially. Any variable operation of material temperatures, molds, pressure and production cycles will lead to size changes of plastic products, especially for products made of materials such as PP, PE, nylon, etc. which have larger crystallinities.

The main reasons are as follows.
1. Machines
(1) Select machines with the large plasticizing capacity if the plasticizing capacity is insufficient.
(2) Check whether voltage fluctuates, components of injection systems wear or hydraulic valves have problems or not, when feeding instability happens.
(3) Check whether motors have problems, screws and charging barrels wear, hydraulic valves are stuck, or voltage is stable or not, when instability of screw speed happens.
(4) Temperature is out of control; proportional valves and general pressure valves are not working properly; back pressure is instable.

2. Moulds
(1) Moulds should have enough strength and rigidity; we should adopt wear resistant materials for the cavities.
(2) When dimensional accuracy is high, we should try not to use a multi-cavity mould.
(3) Ejection systems, pouring systems and cooling systems should be set reasonably so as to ensure stability of production conditions.

3. Plastics
(1) A mixture of the new material and the reworked material should be consistent.
(2) Dry conditions should be consistent; particles should be uniform.
(3) Take into full account the impact of shrinkage on dimensional accuracy.

4. Processing
(1) The higher the temperature is, the smaller the changes of products’ sizes will become.
(2) The mould temperature should be lower when it comes to crystalline plastics.
(3) The moulding cycle should be stable without too much fluctuation.
(4) Shot weight of injection mold products should be stable.

Custom Plastic injection moulding service

Sincere Tech Plastics offers Custom Plastic injection moulding service to the Automotive, industrial, commercial, fastener, electronic and consumer products industries. From the beginning, our strength has been our high level of quality, consistent and responsive performance, coupled with our competitive conversion rates. While we are a mid-sized company we offer value added services that you would expect from a large company such as tooling design and development, Mold-flow analysis, statistical and documentation capabilities including PPAP requirements, warehousing, and assembly and sub-operations.

Our quality management system is registered to ISO9001:2008. The continual improvement results speak for themselves and have lead to performance numbers such as an on time delivery percentage running at 99.8%. We have partnered with institutions such as the nationally recognized Penn State plastics consortium which allows us to have access to the latest technical innovations in the industry and the associated individuals who are recognized as leaders in the plastics field. While many Plasticinjection molding companies have struggled over the past several years, both our sales and our customer base have grown. This give us confidence in our strategy to provide the level of service that we do in a condensed no-nonsense package. We look forward to opportunities to serve you and your company.

The Goal– Throughout our history we at SINCERE TECH Plastics. have pursued continuous improvement in both quality and performance.Our quality policy is simple and clear: “Deliver Products Within Specification, On Time, Every Time.” We accomplish this through control of upstream process variables, inspection and testing, and verification of performance using documentation and statistical tools.

Inspection and Testing – Sincere Tech Plastics has thoroughly documented procedures for inspection and testing. They are tailored based on the requirements of the product in question. Products we produce are checked at
various times during the production process. Some checks are completed using boundary or attribute gages. Other products are tested for measurement using gages that can be traced to national standards. Tools such as attribute check sheets, X-bar and R charts, Gage R and R analysis, and CPk analysis are used to monitor the product and prove the capability of the process.

Documentation/Verification – We confirm our performance with documentation of many types ranging from process capability indices to on time delivery percentages. Records are kept to ensure that only product that has passed our inspections and tests is released for shipment. Statistics are used to analyze data and records are forwarded to the customer when required. Any product that does not pass inspection is controlled by procedures for handling non-conforming product. Lot tracking is maintained on all raw materials through the process. Raw material lots are linked to our finished goods lots for research should there be a problem or concern with a shipment.

Give us a call if you are looking for Plastic Molding China company to support your project, we will be happy to discuss our quality management system. In addition, an uncontrolled copy of our quality manual can be supplied upon request.