How to print GLASS! The first thing to understand is a very slow speed is necessary, so patience is a must.
The key is to follow these four steps:

20mm/s speed


0.1000mm layer height


No top or bottom layers, along with one single direction for infill

DRY YOUR FILAMENT! At least 4hr in a standard cooktop oven at 170 fahrenheit / 76 celsius. Your prints may be cloudy without properly drying the filament.
By following the four steps above you can create a very translucent print. Several factors in positioning the printed object and direction the filament is laid down will give vearing results.
The Best filament to use believe it or not is: OVERTURE CLEAR PETG. It even beat out Formfutura HD Glass.
https://www.amazon.com/Filament-Transparent-Consumables-Dimensional-Accuracy/dp/B07SB761QR/ref=sr_1_1_sspa?keywords=overture+clear+petg
This is for everyone not using simplify3D
EXTRUDER
Nozzle Diameter: 0.40 mm
Extrusion Multiplier: 1.01
Extrusion Width: 0.50 mm
Retraction Distance: 3.05 mm
Retraction Speed: 30.00…