![]() This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, ’s PC). Not only do you not need tools to pop a printed part off. A PEI-coated flexible steel build plate makes a big difference to productivity. The build stack has also been completely redesigned. To further enclose the build chamber the S7 only has one magnetically latched door. ![]() This filters the exhaust air of every print and also improves build temperature stability. It now includes an integrated Air Manager. The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers. All these things help, but do not eliminate the problem. Instead of an inverted triangle, an inverted staircase also curls up less (as in the support shown above). Also printing slow and with lots of cooling helps. This support causes very little damage to the rest of the model and consumes only a very small amount of material.Įdit: to reduce overhangs curling up: thicker layers tend to curl up less than thin layers: a 0.2mm layer is *much better* than a 0.1mm. It works due to the stringing and the sagging first layers of the support just sticking to the side walls. Here the supports are totally free hanging, with very small gaps. Takes some trial and error.īelow a new one from yesterday which also works well. So you need to find a balance that works for your models and materials. It also depends on materials, models, printing temperature (cooler is better), layer height, speed. This is all for single nozzle printers like my UM2 I have no experience with dual nozzle (I guess then you could make the gaps far smaller?). Smaller gaps give better accuracy, but make removal more difficult and vice-versa. ![]() Vertical gaps of 0.2.0.4mm usually work well for me. 0.5mm wide, with horizontal gaps between 0.5mm and 1mm. :-)Ĭoncerning the exact dimensions and gaps I would say: design a test piece in which you incorporate several variations, and try which works best for you. I like designing more than post-processing. But if that makes the difference between a succesfull or a failed print, or between almost no post-processing or a post-processing nightmare, I think it is worth the effort. ![]() Yes, sometimes designing the supports takes time. The inverted staircase shape reduces curling-up of the overhanging edges of the supports. The bottom layers of the center support bridge will sag a lot, but that does not matter, as they are discarded anyway. The concept is based on an idea from another user (was that "smartavionics"?). This is usefull if you want to reduce the amount of support material, or if you don't want the lower surfaces to be damaged by supports. These supports hang to the side-walls, so they don't reach all the way down. ![]() The ribs on top reduce the contact area and make removal easier, and they reduce sagging (the blue tray has to slide in the yellow part). Also they have a custom brim (footplate) for better sticking to the glass due to their huge overhangs: I do not want them to be knocked off when the overhangs curl up and the nozzle bangs into them. These pink and orange supports extend from the model, so I can grab them with pliers, because the model is too small to get in there with a knife. See these examples for my single nozzle UM2 printers (I have no experience with dual nozzle):Ī few different support concepts I have used: some with extensions, so I can grab the support with pliers some with holes to insert pins to pull the support out, some with layers that peel off easily, some with several tiny blocks instead of one big block so I can wiggle each tiny part loose, some with overhangs to improve the first real layer of the bridge, etc. Then you have full control and you can adjust it to your needs. For special models and difficult to reach areas, you could model the supports in CAD in the design itself. ![]()
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