Re: Threads stuck on an AP Field Flattener

Christopher Erickson

There may be a tiny amount of skin oil from your hands on the parts and/or the straps. Clean them with an alcohol wipe and try again.

-Christopher Erickson
Observatory engineer
Waikoloa, HI 96738

On Jul 12, 2014 10:24 AM, "Robert Chozick rchozick@... [ap-gto]" <ap-gto@...> wrote:

My strap wrenches are rubber also. This is really stuck. 

On Jul 12, 2014, at 3:09 PM, "'Christopher Erickson' christopher.k.erickson@... [ap-gto]" <ap-gto@...> wrote:


I always carry a pair of strap wrenches with rubberized straps.  I mostly use them to unstick other people's stuff but every once in a while I have to use them on my gear too.
The wrenches with cloth straps don't work well on smooth-finished astro stuff.
Christopher Erickson
Consulting Engineer
Summit Kinetics
Waikoloa, HI 96738

From: ap-gto@... [mailto:ap-gto@...]
Sent: Saturday, July 12, 2014 10:06 AM
To: ap-gto@...
Subject: [ap-gto] Threads stuck on an AP Field Flattener

I have an AP Field Flattener for my 155 and the threads are too tight to twist off.  I have the adapter for a DSLR stuck on the front.  I would normally not need to take it apart but I can hear the elements move inside and wanted to see if I could tighten them.

First, any suggestions for getting the threads loose?  I have some strap wrenches and they don't work.

Second, If I can eventually get the front adapter off, can I easily tighten the lens elements or should I send it back to AP?


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