[Wannabe]

Karren, from reading your many great posts I'd say you're about the closest we have to a boob scientist. As for the "mad" part, I don't judge.

Pink, I sympathize with your contouring issue. I have a similar problem with fitting these things as well. My first DIY effort was using Oxo Good Grips funnels, which are nicely boob shaped and sized, but basically round. As I'm something of a craftsperson I created a custom contoured base for the cups using polymer clay, which when baked essentially becomes PVC plastic. My first one was with a smaller funnel size and worked fairly well, though I was forever noticing and patching air leaks. Then I tried to make a contoured base for a larger size cup and haven't had any luck getting it right.

I haven't tried heating the plastic as you guys discussed. I might do that. Also I considered simply cutting the cup into a contoured shape, then padding the base some way. I actually tried padding with auto door weatherstripping, but it was pretty much impossible to seal and stay put.

We mad boob scientists will just have to keep at it until we come up with the the best way to make contoured cups, I guess.