johnrpm wrote:Harry,
Yes the mirror faces have to be very accurate, have you considered polishing a hex nut, they are surprisingly accurate, an M10 nut should be big enough,
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Hi John i did some experiments on the stainless steel nuts for a polygon mirror replacement ..The M10 is fine but theres a defocus of the laser dot ,i tried a lot of different ones ,the metal reflects well but does drop the focus and light levels a bit ..I have ended up using a large flat nut from a large RF plug...this seems the best for distance but still using it works best if its as close to the screen or next reflecting mirror.
The results are not to bad not as good as a glass or plastic mirror but as you say they are accurate and when i need one quick i know what to do .
When i take some photos i will post .