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Project Bioprinting - Setup and hydrogel printing

''German RepRap Protos V2'' with PLA-printhead

In the beginning of 2014 the common 3D-printer "German RepRap - Protos V2" was established in the BIOMAT-Lab. The aim was to get familiar with the principles of 3D-printing while printing polylactide (PLA) before the printer was modified to be used as a bioprinter. Several prints with 3D-models from online sources were done to observe the effects of changing different printing parameters on the subsequently printed model.

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To refine the printer, the printhead for melting thermoplastics was removed and designed completely new by Jan-Philipp Magnus, a second-year student of the bachelor degree course.

Since June 2015 it was possible to print liquids by extruding them out of syringes, which was totally different from printing primary solid material like PLA. Earlier experiences were very useful for coping with problems like smearing or less feed of printing matter.

The further procedure of printing alginate-based hydrogels was developed and optimized within the scope of a bachelor's thesis by Roland Peziol, a student of the Biomedical Sciences degree course.

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>> Page 2: Embedding of cells                         >> Page 3: Printing of alginate beads