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Selective Laser Sintering is where the power source is a laser and the material is in power form usual nylon. The laser sinters a layer of nylon powder, then that layer is dropped a little bit and a small layer of powder brought over and the laser sinters it again over and over untill you have part encase in a nylon powdered shell which later the powder is clean with a brush or a air blower and and left with the complete powder. The advantage for this method is the built doesnt required support structure because the unsintered nylon powder will act as the support for the part. Besides that, the surface detial is the built is very fine and since the nylon powder act as the support the functional moving parts and be done in one go without printing the part seperately then be assemble later. The disadvantage that comes with this method is the built size is limited to the build platform of the amchine itself. The cost of fdm machine is much cheaper compare to SLS machine. In my opinion, the improvement for this mahcine which if a larger built plattorm mahcine is designed it may be more proper for industrial usage.

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ALIFY JEBAT BIN DAUD (DD150075)                                                             Based on the video, my opinion on selective laser sintering is a great improvement in production department. Selective laser sintering is an additive manufacturing technique that uses a laser as the power source to sinter powdered material aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure. The benefits for this techniques are it exhibit a lot more good mechanichal properties. Beside that it also used to make more functional prototype where the surface quality is less desired as the product will be used for functional testing. All the benefit show SLS is a lot better techniques that injection molding.

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ALIFY JEBAT BIN DAUD (DD150075)                                                             Based on the video, my opinion on selective laser sintering is a great improvement in production department. Selective laser sintering is an additive manufacturing technique that uses a laser as the power source to sinter powdered material aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure. The benefits for this techniques are it exhibit a lot more good mechanichal properties. Beside that it also used to make more functional prototype where the surface quality is less desired as the product will be used for functional testing. All the benefit show SLS is a lot better techniques that injection molding.

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In my point of view, Selective Laser Sintering(SLS) is a good technique which is an additive rapid prototyping technique that uses a high power laser to fuse small particles of thermoplastics, metal, ceramic, or glass filled nylon. It also a 3D printing technology utilizing powder based techniques and manufacture of additives in complex shapes and geometric with high level. Apart from that, prototype made with SLS process has better mechanical properties because of the natural thermoplastic materials used for injection mouldingparts that can be an advantage of reduction of components. So in my perspective the current process of SLS can be improvedwith the use of different material than thermoplastic to produce even more better and quality prototypes. Besides, the final process of removing the powder should be upgraded to a better way to minimize the health risk of users.

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Based on the video of the selective laser sinetering (SLS), the video explain about the largest benefit of SLS which the specifically the natural thermoplastic materials. It also have much better in mechanical properties, if compared to injection moulding, SLS can vanish reduction of component. It also more to functional prototype and it better than injection moulding for an industries. The SLS materials are quite same with injection moulding materials in specification, properties and quality. The SLS transform a powder materials form to solid shape of product. Usually product of rapid prototyping only used for prototyping proces, this SLS product can be used as true and functional product fir manufacturing.

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LOGESWARAN a/l R SEGARAN               CD150163

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LOGESWARAN a/l R SEGARAN               CD150163

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In my opinion based on the video, Selective Laser Sintering (SLS) is a 3D printing technology which uses solid powder material to produce a prototype. the material which is used as a powder is a Nylon material. The prototype will be printed as the laser melt off the powder according to the program and drawing which is transferred to the machine. Compare to other 3D printing it has a fast build times it does not need lots of support structure as (SLA). Other than that it also no need of post curing because it was done while the printing process occurs. Furthermore, the solid powder can be reuse after the fabrication of prototypes, the removal of support structures is can be done by spraying the compressed air towards the product. Although there are several benefits on SLS it was not been used in industries because the machine is expensive compared to FDM. Lastly, as a suggestion i would like to say an automatic support structure removal will be useful to improve the function of the machine this is because the dust or the powder is can be harmful for the person who handle it. It has a safe equipment that should be wear but it still can be harm full due to the thinness of the dust.

Thank you

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My opinion on this SLS 3D Printing is that is the really awesome. A really complex and functional product can be produced. It is one of powder type 3D printing are already wide used. This type of 3D printing is very famous because of it short time in production. It is without the need of addition support that can cause defect after the process of removing the support material like others 3D printing technologies. As addition SLS Powder 3D printing has quite good mechanical properties of product too. The improvement that can be made on this SLS 3D printing that I think this printer should have an addition of automated post processing process which is to remove the adhesive powder from the product. This can lower the risk of the user of to inhale the powder and causes health problem.

Thank you dr.

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Muhamad Akmal Haziq Bin hishamuddin  DD150060

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Muhamad Akmal Haziq Bin hishamuddin  DD150060

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for me laser synthering is more easier to use. laser synthering uses powder that is can easily to recycle so it has a minimum waste. the product also can easily clean. laser synthering also does not have to use a support structure because the production of the product is inside the sand. for fdm it needs a support structure to support the product while the product in production. the product is much more durable compare to fdm because of the material used. nowadays laser synthering were widely use in the industries because of the material and the way the product is produce. why it is only use in he industries but not many because of the cost of the machine itself. fdm is more cheaper compare to laser synthering and the part for the machine in laser synthering is more pricier compare to fdm. that is the reason why fdm are widely use for education purposes compare to laser synthering. my opinion we can't change from fdm to laser synthering because of the cost but to make the fdm more reliable the material used for fdm must be more durable, easier to manage, and of course more cheaper.

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CD150034

The Selective Laser Sintering (SLS) is use the Polymide which is a Nylon material. The rapid prototyping process a part layer at a time by using a laser to fuse a thin layer of powder. New layers of powder are added using a roller and the process is repeated until a complete part is produced. SLS does not require support structures since the powder acts as self-supporting material. This allows intricate and complex geometries to be constructed.

In my Opinion, the improvement on the current process is dimension part of accuracy. Besides, a major constraint in this process was the availability of machine time. Last but not least, the material use as a support structure should be change or improving due to reduce the porous surface.

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CD150144
Based on the attached video provided, Selective Laser Sintering is an additive manufacturing method that uses laser to sinter the powdered material causing the powder to bind and form into a solid object. SLS can produce parts from a relatively wide range of commercially available powder materials such as nylon, polystyrene, steel, titanium, alloy mixtures, and composites. Furthermore, SLS does not need support material because the part being constructed is surrounded by unsintered powder at all times, this allows for the construction of previously impossible geometries unlike Stereolithography (SLA) and Fused Deposition Modeling (FDM) method. The material used by the SLS can be improved by using a material that will not produce a porous surface to the finishing of the product.

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AD140044
Selective Laser Sintering is a laser-based technology that uses solid powder materials typically thermoplastics in a 3D printing technology. During SLS, plastic particles, ceramics or glass are combined together by heat from high-powered lasers to form solids. In the video, there are three main highlighted for sls which is good mechanical properties, functional prototype and end use parts. Unlike other methods of 3D printing, SLS requires very little additional tooling once an object is printed. SLS doesn't require the use of additional supports to hold an object together while it is being printed. Such supports are often necessary with other 3D printing methods, such as stereolithography or fused deposition modeling, making these methods more time-consuming than SLS. In the end, the improvement that can be suggested is improvement in terms of material used by using other material with the same or better properties of current materials to produce high-quality models

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DD150072

SLS is 3D printing technique that use material that good in mechanical properties which is natural thermoplastic. The SLS produce better good quality surface for the model and can print customization part for the customer request. The SLS also print the model can fully functional as it design not print the prototype only. The improvement can be done is give the awareness to engineer and people that involve with design that the SLS can print the model functionally and lest cost. Next, the SLS can improve in term of complexity of the model and the accuracy of the model as it can be use for experiment that need the accuracy of the model. Lastly, create different material that has better mechanical properties than natural thermoplastic.

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CD150065

As the summary,the video showed Selective Laser Printing (SLS) is a powder based fusion techhnology where as good mechanical properties and been a laser by laser by laser.It also have good prototype before mass production using injection moulding. As results, the final part produce by the SLS can be used as a functional or end use compenents. The improvement from the machines optimize the scannerparameter to improve accuracy, surface finish and repatability it also can improve by using robotic finishing.

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Based on the video, Selective laser sintering (SLS) is a 3D printing technology which uses nylon powder based fusion technique. SLS process have good mechanical property which is closer to injection moulding, and customers are satisfied with the surface quality. SLS prototype process uses natural thermoplastic material which gives it a good mechanical properties. In addition, SLS is the best choice for producing production parts without the expenses on tooling.

In my opinion, The improvement that should be made is the size of the SLS machine should be increase, so that the size of product to be print can be bigger as well. Other then that, the final touch which is removing the dust which is done by using hand currently could be changed to automation system where the end product will be blown with blower or any other alternative to reduce the exposure of radiation on human's skin.

Thank you sir.

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As a summary, objects printed with SLS are made with powder materials, most commonly plastics, such as nylon, which are dispersed in a thin layer on top of the build platform inside an SLS machine. A laser is controlled by computer that give information to print. Then, heats the powder either sintering or melting process. Once first layer is formed, platform of SLS machine drops for exposing another layer. This process continues until the end of product. After product formed, it need to be cool before removed. Compared to FDM, SLS do not need any supports to hold overhung part. SLS has proved to printed high quantity materials such as ceramics even metal. So, it has huge ability to build more prototype for airplane parts in future. (127 words)

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(CD150067)

Based on the attached video, this method uses a laser beam that is focused. At the molecular level, powder is only sintered based on powder and the manufacture of additives in complex shapes and geometries with high precision levels. This means they are 3D prints and are usually much less that it will have a shaft. The SLS process uses natural thermoplastic materials to provide a good mechanical properties and prototype processes work to meet customer demand as well as a good finishing surface. The advantage of SLS is that it can easily print from alloys containing different melting point materials. But the SLS process has a weakness in which the material should be added layer by the layer before it is cut according to the desired shape. Recommendations I can cast, provide programs automatically to remove dust from manual ways that may affect the material if not in the correct finish method on post processing.

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FATIN AZREEN BINTI MOHD AL JOHARI CD150148

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FATIN AZREEN BINTI MOHD AL JOHARI CD150148

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Selective laser sintering (SLS) is the one of the 3d printer process, are been used rather than the other manufacturing process such injection molding using the thermo plastic as material. SLS is more induced functional prototype due to the surface quality of the product reach the desire of the user/customer. Thus, SLS also have good mechanical properties, and yet produce the end-used parts. As additive manufactured process, takes nylon powder spread it in layer and selectively sinter that layer powder with a layer and spread another layer powder on top of that, and repeated it process until created one product. SLS can produce part unsupported, where free from any hanging support feature, and more to straightforward product, plus, by SLS can produce more in one time due to the SLS 3D printing can build in x, y, and z direction.

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MUHAMMAD ABDUL JABBAR BIN NASURUDIN (CD150203)

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MUHAMMAD ABDUL JABBAR BIN NASURUDIN (CD150203)

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Selective laser sintering (SLS) is additive manufacturing technique that operates with  laser and sintering the powder material layer by layer. By automatically aiming the laser at a space following the model drawing. It will bind the material together to create a solid structure. The process of SLS used actual thermoplastic and elastomeric materials to produce parts thus producing a good mechanical properties product. Final parts can be used to test future injection molding designs or as functional and end use components. Material for SLS properties is almost the same as the injection molding part.  SLS show that rapid prototyping is not only use for prototyping but also can be functional as well.

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Selective Laser Sintering (SLS) is a 3D printing technology utilizing powder-based techniques and the manufacture of additives in complex shapes and geometries with high precision level that make SLS an ideal choice. Based on the video provided, there are three terms were highlighted which is mechanical properties, functional prototype and end-use parts. As commonly known that the SLS prototyping process is using natural thermoplastic material give good mechanical properties and functional prototype process to meet customer demand as well as good finishing surface in quality due to end-use parts. In fact, SLS is similar to injection molding machine but using a powder (nylon). In the end, the improvement can be suggested in post-processing to obtain good surface quality by replacing manual operation in removing dust using the robotic system as a finishing tool that automatically programmed from the computer software such as CAD or CAM model.

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Selective laser sintering (SLS) is a powder-based fusion technology that uses a laser beam to locally sinter polymer powder to build parts layer by layer. SLS can be applied to produce complex shaped products and is an economical choice for small series production. Majority of the materials are based on polyamides which are synthetic thermoplastics polymer. Therefore, prototype made of SLS process has better mechanical properties which is closer to injection moulding parts. Besides that, SLS product has better surface quality and it can fulfill the form and fit functional testing of the real product.  However, the size a part is able to be printed at is limited by the size of the nylon container used in the SLS machines. SLS printing can be improved by increasing the maximum product size that can be printed. (135words)

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MUHAMMAD AL-HAQEEM CHEE BIN ADIN CHEE (DD150074)

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MUHAMMAD AL-HAQEEM CHEE BIN ADIN CHEE (DD150074)

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The SLS (Selective Laser Sintering) are the one of rapid prototyping technique that use a powder type of raw materials. The material use of this technique are natural thermoplastic materials, which can give better mechanical properties, functional prototypes and end-use parts specifically. In addition, the material use in SLS is almost similar properties to injection moulding part, which is nylon 11 and nylon 12. Thus, the prototype produced are lightweight, highly durable, and both heat and chemical resistant that made SLS is the best choice for producing production parts without the expense of tooling. There is not really need to improve in the current process, but the minor improvement in current process needs to be done due to safety and health, which the product removal should not manually operate by human, as the excess powder may be harmful to the operator.

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Based on the video, Selective Laser Sintering (SLS) used in additive manufacturing in 3D printing using natural thermoplastic material which has good mechanical properties. SLS is used to produce functional prototype due to its good quality surface finishes that are desired by the customer to do form and fit functional testing. The material used for SLS have closer properties to the tool machinery injection molding part.  The final parts produced by the SLS can be used to test future injection moLding designs or as functional, end-use components. The current process of SLS can be improved by exploring other material with the same or better properties than thermoplastic material in order to produce high quality of model.

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In my opinion, Selective Laser Sintering (SLS) uses a laser to precisely fuse nylon powder into lightweight, robust part. In average FDM 3D printer, filament is use in the process, while SLS machine use usually nylon powder fuse by laser to produce the design part. Nylon have the endurance to bend and return to its original form, rather than fracturing suddenly in usual FDM 3D printer filament. SLS produce part with high accuracy. Advantage of SLS is that it needs no support structure while printing. Remaining unsintered powder will be collected and can be reused. SLS parts have good, isotropic mechanical properties making SLS is ideal functional parts and prototypes. Improvise that can be applied to this machine is the post process of the parts should be process in the same machine.

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in my opinion, Selective Laser SIntering (SLS) is good at generating functional prototypes. SLS process also uses natural thermo plastic material which has good mechanical properties. It is also suitable to be used to produce prototype before mass production is done using injection molding process. However, the SLS process has a weakness in which the material needs to be added layer by layer before it is cut according to the desired shape. Compared to more advanced technology Like Fused Deposition Modeling (FDM) it can also produce prototypes that can work, but FDM process can save from the use of FDM process materials using extrusion processmaterial without excessive excess of unused material in producing prototypes. SLS can be improved by changing the material to  produce less defect product.

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SABRINA BATRISYIA BINTI AYUB ALI (AD150019)

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SABRINA BATRISYIA BINTI AYUB ALI (AD150019)

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In my opinion,  compare to FDM, SLS process is easier to use as there are not many tooling needed. The difference between these two technologies is FDM only extrude the material needed for the product while SLS need a lot of powder material before the process begin and excessive material will be remove at the end of the process. The end product of the process is end-user product which can directly be use. The process does not require any complex finishing process because process follows exactly the 3D CAD of the product. For the improvement of the process, maybe the powder removing process can be automated to prevent any risk towards the workers as inhaling the powder can cause illness to them.

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NUR HANIS LIYANA BINTI HASSAN (CD150192)

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NUR HANIS LIYANA BINTI HASSAN (CD150192)

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According to my view,

Selective Laser Sintering is an additional manufacturing technique used as a modern material processing. While there are many more advanced technologies compared to rapid prototyping, SLS is a well-founded process for thermoplastics, because of the limited quality produced compared to traditional methods. SLS can be used to process various types of materials such as metals, polymers, ceramics, and composites and can also can build complex parts. The industrial applications for SLS are widely available in areas such as automotive, biomedical, architecture and so on.

Otherwise, we needs more efforts to understand the physical phenomenon involved in this process, such as implementing convenient models in numerical tools to simulate various process steps, validating tools and conducting relevant studies for improve the quality of the product. Components available on SLS require post processing that may affect mechanical properties. What we can improve about SLS is, knowledge of sintering and post processing effects must be assimilate into design and process arrangement.

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As salam and Good morning, for this week FOC task, students are required to review the attached video on Selective Laser Sintering (SLS). SLS is one type of 'POWDER' rapid prototyping technique that are widely used nowadays.  Based on the video please write a short review on what do you think about this process and what can be improved on the current process. The review should not be less that 100 words and not more than 150 words. Please state your name and matrix number. Please provide your answer through this link  https://padlet.com/reazul/5jtkg0t41g3w....Say no to "PLAGIARISM". Thank you,

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As salam and Good morning, for this week FOC task, students are required to review the attached video on Selective Laser Sintering (SLS). SLS is one type of 'POWDER' rapid prototyping technique that are widely used nowadays.  Based on the video please write a short review on what do you think about this process and what can be improved on the current process. The review should not be less that 100 words and not more than 150 words. Please state your name and matrix number. Please provide your answer through this link  https://padlet.com/reazul/5jtkg0t41g3w....Say no to "PLAGIARISM". Thank you,