Teacher Prop: Gel Electrophoresis Practice

My inspiration for creating this for Dr. Johnson was my struggle to fill in the wells of the gel the first time through. Gel electrophoresis is used to determine the approximate size of the genome of DNA. This is done by directly pipetting (inserting) the DNA into a well in a gel, where there is device that runs electrical current through it. This causes the solution, or the DNA to move through the gel. Although having a plastic version of a gel isn’t the same effect as a normal gel that is practically see through, I thought that it would still benefit people to submerge the plastic in water and load in food colored water into the wells and practice keeping a steady hand and figuring out how to use the pipette efficiently. Even though that the material we use isn’t the best for holding liquids, it could still give a student a good idea of how it works and get an idea of how it should be done.

To design this, I looked at a basic picture of a gel electrophoresis, and rather than directly copy it by putting an image into fusion, I used my eyes and kind of made my own design. I started with a basic rectangle and extruded it upwards, then I extruded into the rectangle to get the ‘tub’ for the solution and I extruded into it from the bottom to get the place where the gel is supposed to sit. A lot of this design is figuring out the dimensions to ensure that the gel stays in the same position. Another problem with this is that the gel will more than likely float in the water, but if you are just using water you can holder it under, or just glue in the gel.

SIde Note: The dimensions in the PDF are very large, and the print is almost 22 hours… I recommend scaling it down at least half that size.

PDF for Drawing: file:///C:/Users/Owner/Documents/3D%20Printing/Teacher%20Prop%20Drawing%20v1.pdf

Link to Thingiverse: https://www.thingiverse.com/thing:3993318

Print Settings:

Layer Height: .2mm

Support: None

Adhesion: None

Print Time: 22 hours

Amount of Filament: 216g

% Infill: 15%

Leave a Reply