My assumption is that the DIY Pancreas community is well-informed, technically capable, and highly motivated. My guess is it hasn't done what you suggest for p

My assumption is that the DIY Pancreas community is well-informed, technically capable, and highly motivated. My guess is it hasn't done what you suggest for practical reasons related to supply chain, intended user base, and practical engineering considerations appropriate for high reliability mechanical design for medical use. For example, the insulin delivery system has many points of failure. Any fault or failure is likely to have severe health impacts on the user. To a first approximation, doubling the number of pumps doubles the points of failure. But I could be wrong.