Step 8: Making the window and installing it.
To make a window. Fill the tray to the brim with drinking water. If you want it to be clearer, use distilled water and boil it.
Let the window freeze over night and then use warm water to remove the window from the tray (slowly pour warm water on the window to melt it slightly so that it slips out of the tray)
After the window is done. Add it to the front of the floors (only 2nd and 3rd floors can have windows because otherwise you won't have an entrance) Have somebody hold the window in the space while you slowly and gently build up with slop around the window to secure it in place. Use the tool to smooth bits out and for slight adjustments.