When I am approached by people who are not familiar with 3D printers, the first thing they usually ask is, “How do these printers work?” I usually take a moment to pause and then try and figure out which type of 3D printers they are referring do. Is this person a corporate business executive, someone who would be more interested in the industrial level 3D printers like those manufactured by 3D systems and Stratasys? Or, perhaps they appear to be a tech-geek, potentially interested in 3D printing stuff for themselves at home. This is a determining factor in helping me decide, which 3D printing technology I should explain to them.
The thing I love about the technology behind 3D printing is that when it comes down to it, it really is quite easy to understand, grasp and explain. That’s one reason I love talking to people about additive manufacturing. The most common 3D printing technology among hobbyist and the average Joe is Fused Filament Fabrication (FFF), also known as Fused Deposition Modeling – FDM (although this term is trademarked by Stratasys).
FFF/FDM works quite simply by extruding molten plastic out of a small nozzle, in a similar fashion to how a glue gun extrudes hot glue. Whereas a glue gun is controlled by an individuals hand movements, an FFF 3D printer is controlled by sophisticated computer software, thus is much more accurate, and can print with much higher resolutions. Upon the extrusion of either PLA or ABS plastic, the material is placed onto a build platform. In many cases, especially with ABS printing, the build plate is heated to aid in adhesion, improve print quality and prevent warping.
Sometimes it is difficult for newcomers to 3D printing to understand the heat aspects of the technology, but thanks to a man named Frank Kinnaman, this is no longer an issue. Kinnaman decided to take his smartphone, equip it with a Seek Thermal Camera Attachment, and record his 3D printer in action. As seen in the video below, the results are quite interesting, as well as entertaining to watch. Most importantly though, they provide for an easy way for those new to the technology to understand how the heat elements of a 3D printer work.
This shows exactly how heat is involved in the entire FFF printing process. Thanks to modern technology Kinnaman was able to capture this very interesting video. The thermal camera attachment he used cost him only $200, and can be found here.
What do you think about this video made by Kinnaman? Discuss in the 3D printing thermal video forum thread on 3DPB.com.
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