Microcentrifuge rack

Inspiration: Dr.Johnson had wanted a rack that could specifically fit small 0.7 diameter tubes for her class to use. This seemed easy enough to accomplish so I took up the task.

The Process:

First, I sketched a rectangle on the xz plane and extruded this in the + y direction.

Then, I hollowed out the inside and, using a rectangular pattern, sketched an array of circles on the top.

Next, I cut holes all the way through body using the circles as the cutting tool. I did this twice so all 4 sides had holes cut through them.

For the finishing touches, I filleted the corners by 5mm to give it a finished look.

Final Product:

(For this particular print I cut off one base using a construction plane because it saved 4 hours on the print and was not necessary for the purpose it was going to be used for anyway.

Printer Settings:

  • Layer Height: 0.2mm
  • Support on
  • Adhesion type: None
  • Print time: 3 hours and 41 minutes
  • Filament type: eSun PLA
  • Filament amount: 55g
  • 20% infill
  • Infill pattern: Lines

Technical Drawing:

Thingiverse Link: https://www.thingiverse.com/thing:4012333

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