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Rennovating an 8-inch Cooke Part 2

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29 replies to this topic

#26 stuart keenor

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Posted 10 April 2020 - 09:20 AM

What an incredible journey this telescope has had !! I commend you for your commitment to revive this piece of history 👏
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#27 james7ca

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Posted 13 April 2020 - 07:48 AM

Thanks for documenting your journey. Can't wait to see the finished product.


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#28 martinr

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Posted 19 April 2020 - 04:36 PM

Thanks everyone for your interest in this project. I've the last couple of weeks working on a small item, a brass bracket that supported a filter wheel. You can see a before and after picture - and it's amazing how some of this material comes back to sparkling. The central spindle is different material (iron? in the 1880's) - and is very rusty. Also it is slightly bent and I don't want to try to straighten with risk of it breaking. If you have ideas, please share. One idea is to re-thread it with die.

Attached Thumbnails

  • FilterWheel_original_sm.jpg
  • IMG_3253s.jpg
  • IMG_3255s.jpg
  • IMG_3252s.jpg

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#29 R Botero

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Posted 20 April 2020 - 04:19 AM

Martin

 

Nice work :waytogo:.  You could re-thread it depending on its intended use. However from the pictures it looks a tapered thread which is more difficult to machine and a die won't do (particularly the top section). But difficult to tell and it may be tapered only from rust/use.  What does actually attach/threads onto it?

 

Roberto



#30 martinr

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Posted 16 September 2020 - 02:00 PM

A brief update has been added to this story here:

https://www.cloudyni...h-cooke-part-3/


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