For this project, I was tasked with designing a hand applicator for testing, one which could provide enough force to insert the glucometer onto the skin. Using the laser cutter, lathe, and drill press, I designed and manufactured this spring-loaded hand applicator for the Sano glucometer.
"DESIGN, DON'T HACK!"
However fast the startup required each project to be completed, I made sure to "design, not hack"...in other words, invest some time up front to plan my design, go through a few iterations of sketches, then start machining. Immediately starting to machine something, then hacking it together post-processing would yeild a lower quality product.
UTILIZING LOW-TOLERANCE COMPONENTS
Since the stroke of the spring loaded arm had to be quite accurate, I decided to use some off-the-shelf components from ThorLabs, which offered mechanical stability and high precision. Here scene are the shafts and the collets used from ThorLabs.
AUTOMATIC 100ML WATER DISPENSER
The chemistry team identified a need to build a automatic, handheld 100mL dispenser for chemistry experiments. The dispensor has two states - one in which the spring is uncompressed and the top hole was open to be filled from a jar above, and the second when the user compressed the spring, releasing the o-ring seal at the bottom and dispensing water through the hollow tube.
One of the problems I had while making the automatic 100mL dispenser was keeping the dispenser sealed in the off state. While the buna-ring actually provided quite a good seal, the acrylic box was the most leaky element. So, I used a NuSil solution which proved to be the perfect remedy to a leaky problem.
SHOT BOTTING ALL DAY, EVERYDAY...
For one of my other projects, I was in charge of using the CNC-Shotbot Desktop to 2D-carve out our electrochemical testing setup for chronoamperometry, as well as voltammetry of the glucometer.