3D-Printed Glass Is Now a Thing Thanks to MIT.gh (39.7 KB)
G3DP 3D Printed Glass Technique Developed By MIT | Hypebeast
My mind was already blown, and then I read “3D printed glass”! what! lol 
Might as well add fibers and make some aerospace composites etc. 
is there a way to control the top and bottom radius separately
Yes.
I made this cluster several years ago for exactly this kind of geometry. Note that the result is a surface with no thickness. This can be printed on a regular FDM printer in Vase Mode, but the result will be very thin and quite fragile.
The MIT glass printer uses this same approach (probably using Catia), but the resulting print is quite strong because the radius of the opening through which the molten glass is emitted is relatively large. The net result is what is shown in the top image.
Note: I’m using Rhino8 Beta and I had to rearrange the order of adding the individual curves to the Loft component. This was strange.
glassprint.gh (20.4 KB)
It makes my first-half definition too stupid…