An idea on Moineau pumps

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I was working on a project that required a pump for a thick fluid, and I thought using Ttsalo's design from Thingiverse would be a straightforward solution - http://www.thingiverse.com/thing:15538. However, after conducting some tests, I encountered an obstacle, and when discussing the issue with others, it was suggested that the stator should be made of rubber to ensure a snug fit with the rotor, preventing air pockets from forming during movement. Since I didn't have elastic filament available or any experience with its flexibility, I sought advice elsewhere. User A2 recommended using oogoo silicone on the reprap forums - http://forums.reprap.org/read.php?180,112397, which I wasn't familiar with but easily found online. I created a sample stator and matching rotor pump for testing purposes, and it worked smoothly. To make the rotor cavity, I designed it to be removable from the silicone once cured, allowing for easy removal. The funnel-like part serves as both a container for the oogoo silicone and the stator itself. Here are some videos showing its operation in forward motion - http://www.youtube.com/watch?v=DJLLvQahp9U and http://www.youtube.com/watch?v=qcOW9YIsH_U, as well as reverse motion - http://www.youtube.com/watch?v=BdR1VQdDu4c. To assemble the pump, print both parts. I used a Listerine mouthwash container as a mold for the stator, filling it with oogoo silicone (a mixture of cornstarch and silicone, with optional oil-based color). After the silicone had cured, I screwed out the cavity from the stator hours later. The pump is now ready for use: simply insert the rotor and rotate it, allowing for some play to ensure smooth movement.