Edge HD 8" Secondary Mirror Screws

[AndyThilo]

Hi

Anyone know the size of the collimating screws in the secondary mirror? My scope came with Bobs Knobs but I want to replace them with the original screws which unfortunately didn't come with the scope (it was 2nd hand). 

Thanks

Andy

[fwm891]

Try FLO they sell Bob's knobs - great bunch sure they'll help you out

[AndyThilo]

I want the original screws though, I have Bobs Knobs, I want rid of them 😊

[Pixies]

Ask Bob (he of the Knobs). He'll be able to confirm what was there originally.

[AndyThilo]

Bob says they’re M3 x 12. Bit weird that they’re metric and not imperial. 

Edited May 26, 2020 by AndyThilo

[AstroFin]

1 hour ago, AndyThilo said:

Bob says they’re M3 x 12. Bit weird that they’re metric and not imperial. 

To my understanding they used to be imperial when Celestron still manufactured their telescopes in the U.S. When production shifted to China they began to use metric parts. 

Edited May 26, 2020 by AstroFin

[fwm891]

8 hours ago, AndyThilo said:

I want the original screws though, I have Bobs Knobs, I want rid of them 😊

Sorry not what I meant. They sell Bob's knobs so they will know the thread size and form. Probably a UNC 3/16"