Hey Robert Goddard,

I think you haven't understood the goal of the Peachy team correctly.

To answer your questions:
No, it doesn't have to be a saline solution, but this is the cheapest way and according to the team they haven't yet had any problems with the resin interacting with that.
A solid layer between the fluids doesn't make any sense as the prints have to pass through that area so... how do you imagine it?
How would you want to have a floating build plate?
I cannot think of a reasonable way to have a layer focusing beams from an optical point of view.
The printed parts have almost no weight in water and so very little support structure is needed to keep them in place while printing.
Compared to other cosumer-grade techniques this is awesome and I don't understand how you want to improve in that (they are already using a solid build platform?)

The second post has nothing to do with the Peachy Printer.

Greetings,
quertz