Proline Fin Fillets 9/28/2019

At the 9/28/2019 work session, a subset of the composites team made fin fillets with Proline.

4x large fillets were completed:

~8-10 team members worked on this project!

(Not all pictured)

Carbocyl amounts varied:

Min: 2.4g Max: 3.4g. After 3-4 bowls a standard value of ~2.7g was used.

Most team members were spread across tasks once in the swing of things. 2-3 were mixing epoxy and adding carbocyl, 4-5 were working the fillets.

Fin tools were very bendy for the large fillets.
We lost 2 bowls of 11 due to adding too much carbocyl and spending too much time mixing. The epoxy set in the bowl before we could add it.
Table management: most of the table had proline on it by the end, contaminating the scale and bottom sides of test coupons
We underestimated the volume of proline and ran out of proline.

Several team members expressed lack of clarity of the task at hand, to combat this:
Write a brief SOP with at least the following details
- Type of epoxy used & mix ratio
- Amount of carbocyl to add to epoxy
- How long to mix pre-carbocyl and during carbocyl (make sure it's fast enough, but mixed well enough)
- Photos showing how to use the fin tools (clarify which angles are 90 degrees and which are 45)
- An example of how viscous the epoxy/carbocyl mixture should be
- How to measure the mass of completed fillets
- Clean tools in between fillets
More formally organize groups – team members expressed interest in more structure & tasks
- Sub-leads do more things
Lots of things were dirty:
- Fix table management: designate wet areas and dry areas for mixing epoxy, applying fillets