Proto21 introducing high-grade environmentally sustainable 3D Printing filaments to GCC region.

Proto21 3D Printing LLC, a Dubai based 3D printing startup, is proud to announce a distribution partnership with Filamentive Limited, a UK based company, to introduce their high-grade, environmentally friendly 3D Printing filaments in the GCC region.

Proto21 introducing high-grade environmentally sustainable 3D Printing filaments to GCC region.

FilamentsDubai, UAE – 26th November 2018

 

Proto21 3D Printing LLC, a Dubai based 3D printing startup, is proud to announce a distribution partnership with Filamentive Limited, a UK based company, to introduce their high-grade, environmentally friendly 3D Printing filaments in the GCC region.

As a 3D printing business in the region, Proto21 found it challenging to find a local supplier of high quality 3D printing filaments. Trying the top brands, which were found to be expensive, with a long delivery time, which was inconvenient for rapid prototyping business.

During the hunt for reputed and high-quality filaments, Filamentive was a must try considering the environmental ideologies and responsibilities. After testing some spools of different materials and see highly satisfied results, Mr. Pir Arkam, the founder of Proto21 3D Printing LLC, immediately reached out to Mr. Ravi, the director of Filamentive, with a proposal to become a distribution partner in the GCC region in order to promote the idea of using recycled filaments for our better future.

 

What is the need for environmentally sustainable raw material in 3D Printing?

Currently, PLA is one of the most commonly used materials in 3D printing. While it is plant based, PLA is not the solution to the environmental concerns. Most importantly, PLA will challenge the food and energy security in the future. Also, PLA can take hundreds of years to breakdown naturally.

“90% of all plastics we use come from non-renewable sources. As 3D printing grows, this will only exacerbate the issue. It is a social responsibility of every 3D printing professional and company to address the environmental impacts of using plastics.” Added by Mr. Pir Arkam.

Filamentive chooses to address environmental concerns with the use of recycled materials where possible without compromising on the quality of the product. All the Filamentive products are manufactured by recycled plastic materials, keeping the environment in mind. This ambitious organization has been globally recognized as “One of the Most Impactful Startups” by Web Summit in 2017.

 

The Partnership between Proto21 and Filamentive

“It is such a pleasure to introduce our recycled filaments in the exciting 3D Printing market of the Middle East, through a company possessing similar environment values,” Mr. Ravi Toor, founder of Filamentive says. “Looking forward to working with Proto21 3D Printing LLC to spread our idea, serve the industry with our environment friendly filament and promoting the use of recycled filaments in 3D printing industry.” he further commented.

All common filament material in FDM industry will be supplied by Proto21. The list of materials which will be available in the region include rPLA, PLA Cosmic rPET-G, rABS, ASA, Carbon Fiber & Wood fill. “Considering the rapid prototyping industry, we will ensure the fastest delivery with competitive prices”, Mr. Arkam said.

Used by more than 3000 makers, 3D Hubs, businesses and universities – this recyclable 3D printing material is now available in GCC countries (UAE, Bahrain, Saudi Arabia, Oman, Kuwait, Jordan, Qatar) with Proto21 as the exclusive distributor in the region.

 

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By seo sherpa / September 25, 2018

3D Printing vs Injection Molding

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3D Printing vs Injection Molding

How one should choose the right method which will scale along their business? Here we’ll explore the pros and cons of two popular types of manufacturing technologies. 3D Printing and Injection Molding are very common to each other since both of the technologies have the same objective.

3D Printing vs. Injection Molding

 

How one should choose the right method which will scale along their business? Here we’ll explore the pros and cons of two popular types of manufacturing technologies. 3D Printing and Injection Molding are very common to each other since both of the technologies have the same objective of manufacturing an object with the addition of the material. Injection Molding or 3D printing can both serve the same purpose of rapid development of a design or a prototype.

Though, 3D Printing has made life easier. Prototypes that used to cost thousands of dollars and days to produce can now be done overnight at a “relatively” low costs. 

It has been common word out there that 3D printing is a good alternative to injection molding for rapid prototyping. What percentage of this is true, let’s discuss today.

 

Unit Production Costs & Order Volume

Production cost difference between injection molding and 3D Printing depends upon many factors among which the intended “number of manufactured parts” is the most important.

Before progression of a product, you are more likely to design its test-prototype. Once you finalize the design, all you need to do is print the object into its final form. This whole cycle has a different approach towards cost when it comes to 3D printing and injection molding.

When it comes to unit prices, the unit costs of manufacturing the parts with 3D pritning stay constant irrespective to the increase in the quantity.  

When it comes to low volume production 3D printing serves to be the best option in terms of costs. Whereas, if the number of parts increases the break even point then injection molded parts cost tends to reduce with a significance. Injection molding is ideal for rapidly producing very large numbers of identical parts with tight tolerances.

We have designed the following graph to compare the unit costs for both technologies:

3d-printing-1

Following factors that affect production unit price:

  • The number of units produced
  • The volume of the 3D printed object
  • The complexity of the object’s design

Manufacturing Time

The procedure for manufacturing a single part with injection molding is much faster than the same part done with 3D Printing. This is because 3D printing manufactures the models layer by layer, where as injection molding uses a melted plastic to inject under pressure to fill a mould which is a matter of minutes or even seconds depending upon the size of the object.

3d-printing-2

printed mold can be used for approximately 30 – 100 runs which depends on the material being injected along with the material and the kind of 3D printing technology and material used to produc the mold.

Material requirments of Injection molding process from 3D Printed molds are as follows:

  • High heat deflection temperature
  • High stiffness required to reduce the wear caused by repetetive process
  • Accuracy and level of detail

 

Manufacturing Time

The procedure for manufacturing a single part with injection molding is much faster than the same part done with 3D Printing. This is because 3D printing manufactures the models layer by layer, where as injection molding uses a melted plastic to inject under pressure to fill a mould which is a matter of minutes or even seconds depending upon the size of the object.

 

Customization & Iterations

Able to iterate and maintain agility is the key for any successful product prototyping. Spending a few thousand dollars on a mold which limits any changes for improving our product will most likely slow down our innovation cycle and cost us. When it comes to customization then 3D printing wins the race here because if offers a virtual format of the object in which you can easily make customization as well as do modification which is most probably impossible in injection molding.

3d-printing-3

Complexity

Complexity of the object can drastically affect the manufacturing procedure so it is up to you to opt the best suitable technology for production. Choice is completely depending upon the model we have in mind and the output that we are expecting. When we want a hard engineering constraints and tolerances, injection molding wins. Where as, 3D Printing know complexity. Every design is possible with 3D Printing due to its layer by laye structure. 3D printing can be creative alongside giving you a freedom on possibilities on complex designs.

 

Quality & Finish of parts Manufactured.

3D Printed prototypes are not typically finished parts. Due to its layer by layer manufacturing the resolution of prints can’t match with Injection molded parts. They require machining or sanding to remove small rough jagged edges. Moreover, the printed holes must be post processed for better accuracy.

On the other hand, injection molding is an industrial grade manufacturing technology which is made to provide high quality and final end market products with great finishes with quality of details.

 

Conclusion

Like injection molding, 3D printing also has its downsides. Today, many 3D printing processes are expensive, slow, and may produce parts that are not up to industry quality or material standards.

Well, each of the two technologies have their own use coming along with their pros and cons. Depending upon your budget, time and requirement you can choose either. We at Proto21 can guide you through and help you decide what technology is best suited for your project. Contact us now.

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You can print numerous things through a 3D printer but the most significant factor to consider is using the correct material for your print. There are so many aspects which play a part in making an accurate print which includes the strength, flexibility, and reliability of the printing material.

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ABS or PLA

You can print numerous things through a 3D printer but the most significant factor to consider is using the correct material for your print. There are so many aspects which play a part in making an accurate print which includes the strength, flexibility, and reliability of the printing material.

ABS or PLA?

You can print numerous things through a 3D printer but the most significant factor to consider is using the correct material for your print. There are so many aspects which play a part in making an accurate print which includes the strength, flexibility, and reliability of the printing material.

The two most famous materials in 3D Printing industry are ABS and PLA. Both the materials are the type of thermoplastics which allow to shape them when heated and form a particular pattern when there are cool. Most of FDM printers are optimized to print either the ABS or PLA material, but there are some key differences between ABS and PLA.

Introduction to both:

ABS stands for Acrylonitrile Butadiene Styrene, three monomers mixed and linked together. Used in array of industries worldwide, well known for its exceptional mechanical properties. ABS is stronger with higher temperature resistance, but it has bad odour. ABS prints also tend to warp easily when cooled down instantly after printing therefore it is printed in an enclosed chamber. It is not suitable for food contact & in-vivo applications.

PLA stands for Polylactic acid, originally developed as bio-plastic. PLA is derived from plant starches found in potatoes, corn and soy. PLA works for wide range of 3D printing applications because it is so easy to use. It is very rigid and actually quite strong but is very brittle at the same time.

Properties* ABS PLA
Tensile Strength** 27 MPa 37 MPa
Elongation 3.5 – 50% 6%
Flexural Modulus 2.1 – 7.6 GPa 4 GPa
Density 1.0 – 1.4 g/cm3 1.3 g/cm3
Melting Point N/A (amorphous) 173 ℃
Biodegradable No Yes, under the correct conditions
Glass Transition Temperature 105 ℃ 60 ℃
Spool Price*** (1kg, 1.75mm, black) $USD 21.99 $USD 22.99
Common Products LEGO, electronic housings Cups, plastic bags, cutlery

*Sourced from MakeItFrom**Sourced from Optimatter for a test specimen with 100% infill, 0.2mm layer height printed in a linear pattern*** Sourced from Amazon ABS & PLA

 

Strength:

ABS can withstand more stress and has high structural integrity than PLA. The PLA is mostly used for generic purposes. ABS will distort and bend before breaking whereas PLA more brittle and break under stress. In strength test, PLA withstands more weight before breaking.

Both the ABS and PLA are adequate to 3D print any object due to having similar tensile strengths, but there are some applications which are suitable for one of the two materials.

 

Surface finish and post-processing:

For both ABS and PLA, the print layers are quite visible after printing. Although PLA tends to have a good finish and gives out better surface quality than ABS. Both the ABS and PLA prints require can be sanded and drilled after printing, but extra care is needed with the PLA print.

ABS has a matte finish, whereas in PLA prints are shinier. In post-processing ABS prints, Acetone can be used to smooth the layers and give it a glossy finish. ABS can be easily sanded and is often machined (for example, drilled) after printing, on other hand PLA post processing requires care.

Heat Resistance:

For high-temperature applications, ABS is more appropriate to use than PLA as it has glass transition temperature of 105°C compared to 60°C. PLA will rapidly sag and deform as the temperature increases and reaches 60°C or more.

 

Biodegradability:

PLA is steady in normal environmental conditions however it will biodegrade within 50 days in industrial waste and three years in water, ABS, however, is not biodegradable but can be recycled with different industrial processes.

Applications:

ABS due to its strength, thermal stability and flexibility are used to make applications such as plastic toys, electronic housings, and car parts. PLA known for its aesthetic quality is used to manufacture bioplastics, plastic cups and also medical implants.

Melting Point:

ABS primarily has a high melting point. The standard temperature for printing is 230°C while the glass transition temperature is at 105°C.

For PLA it is recommended to operate within 60º C, the material will start to melt at temperatures between 180°C to 220°C. The glass transition temperature for PLA is at 60°C to 65°C.

 

Print Settings:

For ABS a heated bed is required as the material tends to warp. A person also needs correct ventilation as the fumes from ABS are unpleasant and more toxic than PLA. Careful precautions are required during the melting process as it may cause skin, eye or respiratory irritation.

The PLA is complete opposite when it comes to fumes as PLA exude sweet odor as it uses the sugar-based material. It is more convenient to use and would not warp or crack during printing.

Printing Requirements PLA ABS
Print Bed Optional Mandatory
Print Bed Temperature 20°C to 60°C 80°C to 110°C
Printing Temperature 180°C to 230°C 210°C to 250°C
Enclosure Optional Recommended
Clogs Nozzle Occasionally Never
Fumes Little/None Intense/Bad

 

Each of the materials requires a dry location for storage as both are susceptible to moisture.

Accuracy:

Accuracy of the prints primarily depends upon the FDM’s quality and print settings. ABS and PLA filaments can be printed at 60-100 microns layer height. PLA can print complex objects where you can print a vertical overhang up to 68 degrees as compared to only 45 degrees in ABS

Midair connections or bridges also print reliably with PLA particularly with a longer distance between anchor points. But whether you use ABS or PLA, it is recommended to use a raft and make sure your built plate is flat and level.

Conclusion:

Both materials offer different advantages. ABS is known for structural integrity whereas PLA is better known for its aesthetic quality.

PLA is convenient and safer to use but is brittle and break under stress. It is more user friendly and gives a good 3D printing experience

Whereas, ABS is stronger and more flexible but printing with ABS is not easy to handle.

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Design Rules of 3D Printing (DFAM)

In any type of manufacturing, there are specific rules and limitations that dictate how you must design your product before manufacturing process. As in 3D printing processes, whether it is for prototyping or for manufacturing end-use products, has different capabilities and different design restrictions.

Design Rules of 3D Printing (DFAM)

In any type of manufacturing, there are specific rules and limitations that dictate how you must design your product before manufacturing process. As in 3D printing processes, whether it is for prototyping or for manufacturing end-use products, has different capabilities and different design restrictions. 3D printing can be a bit confusing. There are numerous different software, different materials, and not only the use of different printers but also various printing technologies used for 3D printing. So, it is clear that there is no one size fits for all approach. The limitations in 3D printing are related to the primary mechanics of additive manufacturing process.

rules-for-design-box-1

3D printing is no different at all. There are characteristics of hardware, software, temperature, and filament and many other factors that should be focused in detail while designingin order to transform your digital model into a 3D printed object.

In this article, we will be discussingcritical design considerations for a designer to avoid any mistakes while turning a 3D model into a 3D object. That what are the elements that should be looked after while creating components and parts for 3D printing? Understanding of these elements and the guidelines of each 3D printing process will help the designer to master the process and able to manufacture certain 3D objects through 3D printing.


Digital vs. Physical

When designing for 3D printing, is it essential to keep in mind the fact that your digital design will end up as a tangible physical object? As far as digital designing is concerned, there’s no law of physics to abide by, and the prime example is the gravity.

As what the experts say: “You can design any 3D object in a digital designing environment, but there is no such possibility or guarantee that you can print anything as a physical object especially in 3D printing.”

Every 3D printing technology has their own set of limits for printing procedure. Every 3D printing engineer must keep in mind the following things in prior consideration when printing a digital 3D object into a physical 3D object:

Every 3D printing procedure will deliberately go by end-to-end layering and designing. It is nearly impossible to draw the 3D material on thin air which is the main reason that every 3D layer of the object must use some underline or withstanding material as support before the 3D object will get printed.

Talking about overhangs, they are an area of the 3D model which might occur to support the object layer or may not support the object at all. Most of the 3D printers usually have a limit of an angle which they can adjust when printing the object without needing to help the 3D material until the allowed object anglegets exceed. The mere examples are FDM and SLA because these technologies can hold up the object angle for not more than 45 degrees only.

It is better to keep the angel degree limits in consideration when 3D printing an object to avoid overhangs.

Wall thickness is the second most important thing to keep in mind when designing a 3D object for printing. Most of the 3D printing procedure mainly compose the precise features of the 3D object which might be thin up to a certain level when printing them into a physical object.

rules-for-design-box-2

For the better results, it is wise always to check the wall thickness of your models. For The successful printing of a 3D model, it is suggested to keep the wall thickness more than 0.8 millimeters.

Sometimes the thing which mostly overlooked while designing a 3D object is the materials. The fact they are unnoticed can make a lot of physical modification in your 3D model such as:

  • They may get melt
  • They may get sintered
  • They may get scanned by a laser and solidified

The warping of the 3D objects may occur during printing due to the heating and cooling of the materials.

The warping is more likely to happen when printing on a broad or flat surface. To avoid the warping while 3D printing your model, you must use an adequate surface area in grip with the proper usage of machine calibration. It is recommended to use a more circular edge for your 3D models for printing than using large and flat surfaces.

Whenever printing a 3D model with a sophisticated level of details, it is essential to keep in the mind what can be the required feature size which 3D printer might be able to print.

The primary link of the mechanism of your 3D printer of the required level of detail for 3D printing is with the competences of the selected height of your object layers.

The material you will use in your 3D printing will decide the impact of your final 3D model. So, always try to make sure you have an adequate level of details set when 3D printing a design into a physical object.


Terminologies

What is an overhang in 3d printing? They are geometric shapes in a 3D model that have no material underneath them making layer-based 3D printing challenging. Overhangs are areas of a model that are partially supported by the layer below or not supported at all. There is a limit on the angle in every printer can produce out of support material. Some personal 3D printers must print support structures below to avoid the overhangs from immediately collapsing during printing. Some overhangs are acceptable still you can often

rules-for-design-box-3

safely 3D print overhangs with as much as a 45degrees angle overhang without any issue. If you are increasing the angle from 45 to above, then you are in the state of trouble, which in this case means droopy filament strands.


Wall thickness

Another thing to keep in mind when designing a part to be 3D printed is wall thickness. Wall thickness is the value that gives a 3D model strength and durability. Thin walls for larger surfaces can be crumbling by the printer just because it is unable to print it accurately. The thinner the wall is, the more fragile and disposed to damage and warping the model is. For the avoidance of getting damage figurine, setting up a thicker wall thickness will ensure resistance to the pressure you apply when removing support and processing the model after printing.

rules-for-design-box-4

Level of Detail

When you are creating a 3D model with intricate details, it is important to keep in mind what is the minimum feature size each 3D printing process can produce. The minimum level of detail is connected to the capabilities and mechanics of each 3D printing process and to the selected layer height.

The process and materials used will have an impact on the speed and cost of your print, so determining whether smaller details are critical to your model is an important design decision.

rules-for-design-box-5

Horizontal Bridge Gap

Bridging is when we print a flat, horizontal part of the model midair. While using a support structure for such a role could be a solution, it often works to bridge the gap without using support. We will have to drag lines of plastic between already printed parts, in a way that the plastic won’t fall down when being printed.


Supported Walls

Fused Deposition Modeling happens on a building platform. Since models will be “built in the air”, they should be affixed to the supporting platform to keep them from crumbling. This joining is indicated as the “support” and is required for any model built utilizing this innovation. While keeping the model set up, it additionally empowers the development of components that stand out. After the making of building procedure is finished, the help is physically expelled. If it’s not too much trouble take note of that your model may show noticeable confirmation of the removed support structures.

rules-for-design-box-6

Escape Holes

An escape hole is usually involved when creating an object with a hollowed-out center. A borehole diameter of 2mm is recommended these type of escape holes is required to remove unfused material from the interior, just leaving the printed object behind. A technique that saves on price, since less material is the result.

rules-for-design-box-7

Pin Diameter

The minimum pin diameter is known to be 1 millimeter. Even though smaller diameters are possible, 1 mm is the advised diameter to be used as it helps in maintaining the contour shape of the object.

rules-for-design-box-8

Connecting and Moving Parts

3D printing encloses a wide range of technologies. Some more than others are particularly efficient to create complicated assemblies. However, as the technologies are evolving, we’ve reached a point where almost all of them can create part with moving components like a hinge or a joint. If we’re often looking at SLS 3D printing as the best solution for that, since we only need to remove the uninterred powder to “free” the moving parts, technologies like FDM or Polyjet have also brought solutions to add a “support material” that will be removed

rules-for-design-box-9

with a solvent after the printing process. In any cases, regardless to the technologies you’re using, it’s now widely accepted that 3D printing technologies allow for integrated assemblies. Some with more facilities than other.


Tolerance

the tolerances and precisions of some 3D printing technologies are sufficient to create assembly that will simply “snap” together or will even be used for high performance goals. As a example, General Electric released a video showing how they successfully used additive manufacturing to create a fully working jet engine. The result is astonishing.With appropriate tolerances, parts with functional hinges, chain-link style textiles, and other types of moving components can be fabricated in a single print without the need for post-print assembly. This is one of the main upside of 3D printing when you want to manufacture a product since it can considerably reduce the number of necessary components to create your end product.

rules-for-design-box-10

Rule of thumb

There are different 3D printing processes, but the basic rules and guidelines are more or less the same in each process and vary depending on the material and type of 3D printing process being used. DfAM (Design for Additive Manufacturing) is a big umbrella which includes all the rules, considerations and parametersneeded inadditive manufacturing processes.

3D printing technology is advancing rapidly,and there are demand and need of designing and making more intricate, elaborate and workable objects. There are specific procedures which are necessary when making a physical object and similar guidelines are mentioned in the DfAM ‘Rule of Thumb’. These rules are fundamental when designing and implementing your 3D model.

The 3D models to be designed must firstly fit the 3D printer build volume and either lie flat on the build plate or be supported. Support is one of the most keys, and critical part of the metal printing process and the measurements, placement, and geometry should be correct to prevent waste of materials, printing time and cost. The alignment and positioning must consider during the design stages as upward facing surfaces have sharper edges and a better surface finish.

The rule of thumb or limitations for designing metal printed part features are:

Feature

Design Specifications

Wall Thickness Minimum 0.4mm to 1mm in diameter. For FDM 0.8mm
Pin Diameter More than 1.5 mm in diameter
Hole Size Without supports, 0.5 mm to 6 mm but diameter more than 6 mm will require support
Escape Holes Minimum of 2 mm to 5 mm in diameter
Overhangs One should avoid overhangs in the design and use more than 45-degree angle fromhorizontal for unsupported surfaces
Unsupported Edges Maximum limitation 0.5 mm
Aspect Ratio 8:1 ratio is allowed for build height to section width
Aspect Ratio On a 3D plain allowed thickness in Z-direction is ± 1-layer whereas in XY plane it is ± 0.1 mm

The process and materials used will affect the speed and cost of your 3D print, so it is better to determinethe smaller details which are critical to your design. One should avoid large flat surfaces and round the corners to prevent warping. Determine the minimum level of detail your 3D model require and choose the 3D printing process accordingly.

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By seo sherpa / September 25, 2018

ABS or PLA

You can print numerous things through a 3D printer but the most significant factor to consider is using the correct material for your print. There are so many aspects which play a part in making an accurate print which includes the strength, flexibility, and reliability of the printing material.

Read More