Laser cut 18 sided Polgygon Mirror

I attempted making an 18 sided polygon mirror motor for my next mechanical TV. It was not up to the standard I require. I think the process and my failure may interest you.
I will think about my next attempt for now....
Second version here
• version2
Adjustable hub test here
• Adjusting the run out

[@omegafilmcorporation]

Even though the mirrors for this television set isn't real, but made of acrylic plastic, it actually doesn't perform bad at all, it performs really well actually as a television image! But I hope this mirror television project goes well though!! ;)

[@herrschwarz485]

if i'm not wrog, the scophony had some sort of regulation in its mirrordrums, you should implement a sistem of regulation, or you can take apart a printer and use the mirror drum inside of it (but you should use two of them)

[@Robonza]

I plan to use a digital motor speed (PI) control. I do have polygon motors from laser printers but they don't have enough sides, typically 6 or 8. I need 18 sides to keep the motor speed down to a comfy 5000rpm. I have made a second mirror now and it is running decent. The link is in the description

[@herrschwarz485]

what definition would you achieve ?

[@Robonza]

The goal is 60 lines @ 25fps RGB colour. But I might be dreaming

[@herrschwarz485]

@@Robonza try to interlace the video, in order to lower the frame rate.

[@raymondzhao9557]

@@Robonza 60lines @25fps is slow and should be easy to do