Blog2018-07-10T11:55:40+00:00

Seminar | 3D printing for engineers

Why every engineer needs a 3D printer A survey of trade magazine and news site Made-in-Europe shows that more than 95% of the manufacturing industry sees 3D printing as a keeper. It is seen as an opportunity to tap new markets, make better products and stand out from the competition. Many companies are therefore planning to invest in this technology, but many see this only in the long term. The main reason for this is a lack of knowledge about the investment, the techniques and payback time. A sin, finds dddrop. That is why they organize the seminar: “3D printing for engineers”  on January 30th [...]

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3D print tip: All about ‘Ghosting’

  What is 'Ghosting' and what can I do to prevent it? De side of 3D-printed models are assembled by hundreds of different layers. When everything works optimal, these layers seem to be one whole because of the smoothness of the surface. But when something goes wrong during the placement of the layers, this is clearly visible on the outside of the print. The incorrect layers are presented in the shape of lines or ledges at the side of the model. This can have different causes and one of them is ghosting. In this blog, we will explain why ghosting happens and how it can [...]

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3D print tip: How to maintain your 3D-printer?

Does my 3D printer need maintenance? The first printing hours have passed and by now, your 3D printer has become indispensable for your development and production process. Before you leave for home at night, you quickly want to start the printer, so your prototype will be waiting for you in the morning. Nothing more frustrating than seeing an error and having your 3D printer become unusable. A 3D printer is a machine and -as with all machines- it’s important to maintain it properly and on time. In this blog, you will read practical tips and we will show what possibilities dddrop offers concerning service and [...]

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3D print tip: printing with support material

When do you need to print with support materials? The big advantage of 3D printing is that it enables you to print very complex models, that are hard to produce with other techniques. For instance, think of printing an overhang. Because 3D printed parts are built up out of layers, you always need a layer underneath to build upon. Depending on the complexity of the 3D model, it could therefore be necessary to work with supporting structures. Underneath we will explain the possibilities. An FDM 3D printer can -in most cases- print an overhang with an angle under 45° without needing any support. A tip [...]

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3D design and printing

How to design and print a perfect 3D model? That engineering is a special and great profession, needs no further explanation. All objects around us have once been developed by an engineer. For years, we’ve all mainly produced with the known techniques as mill-turning or injection moulding. Meanwhile, the 3D printer has made its way into the manufacturing industry. This asks for a change in the development as well: designing for a 3D print demands a new way of thinking. With the traditional techniques, development usually starts with a piece of material from which parts are removed until the desired product is achieved. With 3D printing, [...]

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3D print tip: How to perfectly print a thin-walled product

How to perfectly print a thin-walled product? With FDM printing, a model is constructed by printing layers of filament (plastic). This filament is heated until it melts and is then guided through the nozzle of the printer. The width of the layer that is printed onto the print bed is partly determined by the size of the nozzle. Several sizes are available, to enable printing different wall thicknesses (extrusion widths). When printing thin-walled models, it’s good to know how this exactly works. When the wrong settings are used, it could happen that a wall isn’t constructed correctly or not even printed at all. This often [...]

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Printing a 3D model that sticks

Printing a 3D model that sticks The FDM 3D printing technology uses melted filament (plastic) that is printed onto the print bed by the nozzle. For a perfectly printed model, it’s crucial that the first layer of filament adheres well to the print bed. Most filaments tend to warp when the material cools down too quickly, especially on the print bed. So, without the right adhesion to the bed the filament will warp, deforming the product and making it useless. There are several ways to prevent this from happening: the biggest benefit comes from using a heated print bed. Temperature Temperature is very important when [...]

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GIWO Engineering has chosen the dddrop 3D printer for prototyping

Technical drawing agency Giwo Engineering uses the dddrop 3D printer, on their website they explain why: Much is possible with 3D-printing and it’s being used in various sectors, like engineering, manufacturing, automotive and education. The technology has many advantages over conventional fabrication. This way you can make prototypes and end products simple and fast. There are no obstacles during the engineering process because you can create products in any desired form. Besides, you can realize prototypes and end products at low cost through the FDM technology. FDM is a technique based on extrusion. By using a print head, a melted layer of plastic is deposited on the [...]

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3D print tip: What to do with overheating

It is summer and we cannot stop talking about the  temperatures. Sometimes it is too hot, the other time it is too cold. With 3D printing it is actually no different. The correct temperature remains the codeword when making good 3D prints. After all, it remains a plastic process, in which temperature is an essential part. At a higher ambient temperature, a number of things will be important to keep the printing process stable. You can read which parts these are and what you can do about them. The basic principle of 3D printing is that a plastic (filament) is heated to make it liquid, [...]

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Bicycle manufacturer Batavus gratefully uses the dddrop 3D printer

The dddrop 3D printer shortens development time: “On a physical model you can see much faster where the design problems are” Digital design- and visualization software and even VR glasses can not match a physical model for Gerhard Korendijk,  mechanical engineer at Batavus. “Especially if you want to discuss a concept in a broader group.” Since his department has its own 3D printer, he regularly sends a file to the dddrop 3D printer at the end of the working day to have a tangible prototype in his hands the next morning. Accell Nederland is the bicycle manufacturer of Batavus, Sparta, Koga and Loekie. Accell Nederland is [...]

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Benefits of printing with a closed chamber

Purchasing a 3D printer may result in some stress in choice because there is a lot to choose from. An important difference is the construction of the 3D printer. There are 3D printers on the market without a casing/cabinet, these printers are very sensitive to the ambient temperature. There are also 3D printers on the market with a closed casing/cabinet, so the temperature is considerably better to regulate. These closed chamber 3D printers are generally more expensive, but also offer more possibilities with better print performance. Print temperature To be able to make a deliberate choice on which 3D printer the most suitable is for [...]

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3D print tip: How do I make sure that my print does not warp?

Especially with ABS but also with less common materials like nylon, the materials sometimes wants to deform during printing. This warping leads to unsuccessful products and sometimes even to a hard hit: the printhead clashes up against the pulled up material. Naturally you want to avoid that! Why does a product warp? A print can distort because the material shrinks when it cools down. How much a product shrinks depends on the shrinkage strength of the material. Because the printbed is nice and warm, the shrinkage at the bottom will be minimal.  The higher the products, the more shrinkage. This difference creates stresses in the [...]

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3D print tip: What is delamination and how do you prevent it?

We are talking about delamination in 3D printing when there is a shrinkage higher in the product, during printing. When and how fast a product shrinks depends heavily on the type of material you use while printing. PLA and PET-G are not sensitive to this, but when you use more complex, shrink-sensitive materials such as ABS or FLEX, there is a greater risk of shrinkage and warping. For example when the materials cools too much during the printing process. Warping the 3D print Warping can occur at two locations in the model. First of all at the bottom of the product, so directly on the [...]

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Closed versus Open systems

Closed versus Open systems Where the purchase of a professional 3D printer the first years was only reserved for the major players in the market, 3D printing is becoming more and more accessible. Also a professional 3D printer is becoming more affordable, there are machines from €4.000,- that deliver good quality models. Printing a prototype yourself is closer than you might think. Imagine that you don’t have to wait six weeks for a model that you already know is just not good enough.  Instead, in the evening, before you go home, you turn on the 3D printer yourself and the next morning the prototype awaits [...]

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Keep your ‘printer head’ cool!

What a spring season! In the Netherlands we’ve already been able to enjoy many sunny days with very high temperatures. Several heat records have been broken, and the summer hasn’t even started yet. For most people, the hot weather is a blessing, but for 3D printing the high temperature can pose an extra challenge. You might have already noticed this in the past weeks. That the right temperature is very important with 3D printing needs no further explanation. The dddrop printers are equipped with a closed chamber, to limit the influence of the environment. But you can imagine that when the temperature rises, it might [...]

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Remote production is very near

There is no doubt that the 3D printer, with its endless possibilities, changes the way we produce more and more. The technology of 3D printing is in full development and partly due to this development, 3D printing is becoming increasingly accessible and the traditional  production lines are becoming more efficient and fair. Remote printing certainly contributes to this. What do we mean with remote printing and what are the advantages? Remote printing The addition of remote printing enables companies to remotely control a 3D printer anywhere in the world. A well-functioning network or WIFI connection gives you the opportunity to turn a 3D printer on [...]

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3D print tip: A sleek 3D product without strings

When your 3D printer’s head needs to reposition from one point in your model to another, the filament might ooze. The result is stringing: small strings of material appear between the printed parts. Stringing especially occurs with models that have big open spaces, but there are ways to avoid it. The right material Whether stringing occurs, varies per material. For instance, ABS hardly causes strings but PET-G does. The material composition also has an effects, so the extend of stringing may differ per supplier. Retraction setting It’s possible to activate the retraction setting in the slicer software. This functionality makes the filament retract into the [...]

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3D print tip: Creating a solid top layer

A 3D print usually consists of a solid exterior, filled with a grid. This saves time and material, with the same model as a result. Of course you want the outside to be smooth and solid, but that can be a challenge for the top layer. How do you ensure a strong and solid cover on your product? Prevent sagging The solid top layer is printed on top of the mentioned grid filling the print. This means that the top layer has to span the holes in the infill. Logically, the material sometimes sags through those holes. To make sure that the material reaches the [...]

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3D printing becomes more accessible

Do you think 3D printing is a (too) big investment for your company? That could well be a misunderstanding. 3D printing becomes more and more accessible, in terms of acquisition costs and the required know-how to operate the printer yourself. Technologies keep on developing and of course the 3D printer is not an exception. The 3D printer too, is developing rapidly. There are several affordable, good quality plug & play 3D printers on the market, accessible for a wide audience. Over 25 years ago we didn’t even know what we could do with a 2D printer, and now we’re already in full development of 3D [...]

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3D print tip: Why don’t my printing layers merge properly?

When not all layers of your 3D print are printed correctly, this is probably due to under extrusion. Under extrusion is a complex problem that can cause missing layers or layers that are not completely printed, leading to holes in the model. Unfortunately, we cannot point out one single culprit. Under extrusion can have various causes, which makes it hard to determine the actual problem. It mostly has to do with using the right extrusion width. Unfeasible extrusion width When we’re talking about extrusion width, we mean the width of the printing layer that the printer extrudes. How wide or narrow this layer can be, [...]

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3D print tip: Creating a strong infill

Creating a strong infill The infill is an important factor in your product’s strength. Therefore, it’s important to prevent the infill from being too thin or stringy with the tips underneath. Various patterns: There are several infill patterns to choose from and they each lead to different tenacities. Examples of robust infill types are grid-shaped, triangular of solid honeycomb. Less strong are the rectilinear and the fast honeycomb infill. These less robust infills could however still be preferable, as these types can be printed faster and are robust enough for most products. Lower printing speed: The infill is usually printed slower than other parts of [...]

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dddrop case study: High-precision parts with poly-carbonate

FROM DESIGN TO MANUFACTURING “Ejair offers a broad range of services, from technical design to the production of small series. We also produce scale models and prototypes. These are very useful, because you directly hold a physical product. For the production of prototypes and small series, Erik-Jan uses the dddrop 3D printer. His customers are mainly machine manufacturers: “A lot of machine parts are not exposed to extreme stresses, temperatures or pressure. Because it concerns one-off or small series production, it’s very interesting to print those parts in 3D”. “I already possessed a hobby printer, but I needed a more advanced one for the professional [...]

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dddrop: printing your new house in 3D!

dddrop: printing your new house in 3D! Building your own house is an exciting project: What will it look like? Will it turn out the way you imagined? Sander Teunissen is the middle of such a construction project and dealt with the same questions until dddrop printed a 3D scale model of his house. The design When Sander and his wife bought the lot, they had the wish to design the house themselves, together with the architect. This way, they had the freedom to determine the layout and the angle of the light. Besides that, they decided to add solar panels and a heat pump. [...]

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Nine landmarks 3D printed: De Achterhoek in 3D, a big success!

Exhibition: Achterhoek in 3D! Almost a year ago, an enthusiastic group of volunteers started an ambitious project: printing the Achterhoek in 3D. After a public voting phase, nine landmarks were chosen for production. The 3D print group used SOLIDWORKS to draw the buildings, after which they were printed with a dddrop 3D printer. Meanwhile, the project is finished and the prints of the buildings are shown in the Stadsmuseum in Doetinchem.           The process “We underestimated the drawing work” project employee Eefje Ernst says. “It was quite a lot of work, because the drawings need to be solid to print them [...]

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Carbon fiber parts with dddrop 3D printers

3D Printing strong Carbon-fiber parts with dddrop 3D printers At the dddrop 3D printer laboratory the range of printing materials is expanding continuously. The PETG+Carbon material gives our users new possibilities printing high strength parts for applications that demand more than just plastics. The Carbon fibers are really improving the, already quite tough, PETG material specs to new heights. The material is not only strong but also can endure rough (outside weather) conditions. For example: It can be used to print custom clutch levers for top-level motorsports. Just imagine what you can make, using a dddrop Leader PRO and PETG + Carbon material!

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