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8/11/2025, 6:35:11 AM
>>106220034
I just finished his video. He made some mistakes, mainly from a lack of research. First problem was using PET film instead of mylar. PET is harder and was used later for higher density discs. Second issue is he was making circles. That's not what they did. They made big films, then punched out circles. Of course the worst is his recipe is really bad and the heating/compressing isn't going to work. Here is a quote to understand that better:
>The thickness of this layer depends on the size of the disk and the type of density. For instance, the layer thickness is 110 microinches for 8-inch, high-density diskettes and 35 microinches for 3 1/2-inch high density disks. The coating for standard density diskettes is thicker than that for high density diskettes and is less coercive, meaning that it has less magnetic force.
35 microinches he can't achieve like he was. It is tiny! Also thickness as the quote said changes magnetic density, hence why his results magnetically were all over the place. The varying density equals varying magnetic field strength.
I just finished his video. He made some mistakes, mainly from a lack of research. First problem was using PET film instead of mylar. PET is harder and was used later for higher density discs. Second issue is he was making circles. That's not what they did. They made big films, then punched out circles. Of course the worst is his recipe is really bad and the heating/compressing isn't going to work. Here is a quote to understand that better:
>The thickness of this layer depends on the size of the disk and the type of density. For instance, the layer thickness is 110 microinches for 8-inch, high-density diskettes and 35 microinches for 3 1/2-inch high density disks. The coating for standard density diskettes is thicker than that for high density diskettes and is less coercive, meaning that it has less magnetic force.
35 microinches he can't achieve like he was. It is tiny! Also thickness as the quote said changes magnetic density, hence why his results magnetically were all over the place. The varying density equals varying magnetic field strength.
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