Check the Solidator DLP Desktop 3D Printer on kickstarter.
See the answer I got about PDMS below:
thank you for your interest in our project. We do not use PDMS as this has been proven to break easily and require you to remove the resin from the tank after each print.
Instead our special VAT uses a patent-pending technology to allow for non-stick here.
That technology is why we can print that large.
“…yes that is correct. There is nothing you need to do to maintain the non-stick property. There is no vaccum and no such effect in our technology. There is also no peel-off effect necessary. We can print a 0.27x0x27x0.01 mm Voxel, so yes we can print very small parts without breaking them…”
We may be able to find a PDMS replacement on our B9 one day.