![Sapphire Windows Substrate for Telescope Mirror Blanks Optical Glass Windows - China Sapphire Bouble, Bouble | Made-in-China.com Sapphire Windows Substrate for Telescope Mirror Blanks Optical Glass Windows - China Sapphire Bouble, Bouble | Made-in-China.com](https://image.made-in-china.com/202f0j00FwyhuCvzScpb/Sapphire-Windows-Substrate-for-Telescope-Mirror-Blanks-Optical-Glass-Windows.webp)
Sapphire Windows Substrate for Telescope Mirror Blanks Optical Glass Windows - China Sapphire Bouble, Bouble | Made-in-China.com
![Want to build a scope? I'm giving away 2 6" f/8 primary mirrors and 2 6" mirror blanks. PM if interested. : r/telescopes Want to build a scope? I'm giving away 2 6" f/8 primary mirrors and 2 6" mirror blanks. PM if interested. : r/telescopes](https://i.redd.it/5h5cpkvrw6861.jpg)
Want to build a scope? I'm giving away 2 6" f/8 primary mirrors and 2 6" mirror blanks. PM if interested. : r/telescopes
![Casting a Large, Light-Weight Telescope Mirror From Recycled Glass : 13 Steps (with Pictures) - Instructables Casting a Large, Light-Weight Telescope Mirror From Recycled Glass : 13 Steps (with Pictures) - Instructables](https://content.instructables.com/FPT/P5LI/H2TJ4MD1/FPTP5LIH2TJ4MD1.jpg?auto=webp)