Week Nine

The bones that we requested in Week 8 were received this week. They are shown in the picture below. As a recap, we printed four pairs of bones: a set of healthy bones with no modifications, another set of bones with minimal modification, one more pair with slightly more modification, and a final pair of bones that had the most modified dimensions.

4 set of bones printed in red ABS plastic. As laid out above, the bones
decrease in scale of modification. The bones farthest to the right have not been modified at all.

The majority of the time in lab was spent in treating the bones with acetone. Out of the eight bones, all of the modified bones as well as one healthy bone were soaked in acetone for sixty seconds. The remaining healthy bone, which was not treated, will serve to be a control group. Furthermore, the data that we collect after testing this bone will serve as a back-up set of data to the original data we have. This way we can check for any outliers, if they should so arise. Further testing of data and data-analysis will follow on Friday of this week (5/31/13).

Pouring 100% in a soap dish

Bone undergoing treatment for 60seconds

--- FRIDAY UPDATE---

After waiting a couple days for the acetone treated bones to dry, we went back to the lab today and tested the eight bones. Though the data we received was consistent, it was surprising to find that these bones, unlike the ones printed several weeks ago, were not hollow. Instead, they had a second layer of thick plastic inside the bone.