DNA Model

I designed this model to provide a good introduction to the topic of genetics in a school context. Using this model, DNA and RNA sequences can be assembled in a playful and intuitive way. For better demonstration, magnets can be inserted into the bases during the printing process. This enables matching bases to attract each other, which also means that you have to apply force to separate the bases again. I based the design of the individual components as closely as possible on common shapes and colors illustrated in educational literature.

To consider when printing:

• Make sure that elephant foot compensation is activated
• When using magnets, particular attention should be paid to their orientation
  • A stop must be configured in the slicer in order to insert the magnets during printing (Depending on the layer height used)
• Use a color change command in the slicer to print the letters in a different color
• The connectors have a tolerance of 0.1 mm
  • Make sure that your printer can handle this tolerance in order to obtain smooth connections

My settings:

• Printed with the Prusa Mk4 and a 0.25 mm nozzle
• Layer height: 0,07 mm (DETAIL)
• Infill density: 10% (Grid)
• Elephant foot compensation: 0,2 mm
• Pause print (M601) in layer 63
• Color change (M600) in layer 85

Used material:

• Sunlu PLA Grass Green
• Sunlu PLA+ Green
• Sunlu PLA+ Yellow
• Sunlu PLA+ Orange
• Sunlu PLA+ Silver
• Sunlu PLA+ Sky Blue
• Sunlu PLA+ Grey
• GEEETECH PLA Bonewhite
• Small round magnets 3x1 mm (2 magnets per part)