Design and 3D Print of Eppendorf Test Tube Rack

Last 2 weeks ago I manage to spend some time designing an Eppendorf test tube rack. This particular rack are common in medical sciences lab, in which my wife is working in. Well, I personally never seen the rack, but my engineering sense told me just take the test tube work my way up, this is called bottom up approach in design.

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In her lab, the test tube rack is somewhat an asset, therefore everybody needs to sign in and wait for turns to use it. I recognize this as a problem, therefore I took an initiative to design and manufacture a tube test rack for her. I began with measuring the test tube using micrometer as shown below.

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My wife requested that the test tube rack should be able to store 4 x 5 test tube. So using the measured value, I pop my favourite CAD software (ProE) and began designing the rack. I took Mac Mini design as an inspiration. See figure below.

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Next, the model were saved as .stl and sent to MakerWare as shown below. The .stl file were later processed as g-code and saved in an SD card.

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Quick! Head to the bat-3D printer, Robin!

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The final form is shown below, victory!

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