as promised, here is the mold for PDMS window. designed by Jannik Peters.
bottom and top mold. printed on Dimension machine. you can print on Eden or Objet, just make sure the support material won’t get in touch with the PDMS, it will make the PDMS not able to cure.
put the glass in the bottom mold. then carefully pour some PDMS around the edge so that it seal the glass. put the whole thing in the oven for 20 min (150F). no need to put the top mold on for now.
After that take the bottom mold out, put the top mold on. pour the PDMS in till the PDMS reach to the surface of the mold. you might wanna level your oven so that the PDMS is flat.
(I manually drilled the hole a bit bigger later. it’s updated in the file already). After another 20 min in the oven, the PDMS should be cured.
remove the top mold.
get the PDMS window
then screw it back on the tray