Objet 3d printer support material removal

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Jan.28, 2012Thingiverse user Tony Buser has recently made a very cool Hilbert Cube using a MakerBot Thing-o-Matic with dual mk7 extruders. The Hilbert Cube was printed all at once as one piece. The success of printing such a complex object was based on his earlier project dissolvable support gearbox. It has gears on shafts inside a shell and would require internal support structures but very difficult to remove.

Buser found a solution: he tried to printing with a water soluble plastic and a base plastic simultaneously. At the beginning he used ABS and PVA plastic but he had trouble getting PVA to stick to ABS. With microscopic layer resolution and accuracy down to 0.1 mm, it can produce thin walls and complex geometries using the widest range of materials available with any technology.

How PolyJet worksPolyJet 3D Printing works similarly to inkjet printing, but instead of jetting drops of ink onto paper, PolyJet 3D Printers jet layers of curable liquid photopolymer onto a build tray. The parts are incredibly tough and perfectly fit for purpose as useful buckles. Print made with a Mendel90 with an E3D-v HotEnd: at 290C on the HotEnd and 130C on the bed with UHU Stic as the print surface. These scale models were printed on a Fortus FDM machine using blue ABS-M30 material.

David oriented the models in such a manner that support removal was easily accomplished without a water bath. These models were given to participants in the Sikorsky Innovations STEM Challenge 2012.Learn more about Fortus machines. Sadly, this is not the case, as any maker with a degree of experience will know. Once the model finishes printing, the real work starts. Removing the print from the build platform can be an adventure in itself, sometimes requiring razors, scrapers and a good deal of energy.

Then the cleaning and finishing process begins. If you missed it, check.

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