Part 3 of "Casting an aluminium die for casting aluminium into".
This video is an explanation of the tilt casting process that I use to do this casting
Part 1 of this video - Casting the lens blank masters, can be seen here https://www.youtube.com/watch?v=hVdLDFAgJBg
Part 2 of this video - Casting the lens blank die, can be seen here
https://www.youtube.com/watch?v=mYM0Swgd5lI
Part 4 of this video - Lens blank gravity die casting, can be seen here https://www.youtube.com/watch?v=G48QR90ur5I