The Loctite threadlockers that I use range from weak bonding types that will
release under torque to those that they recommend heating for release if its
appropriate to the materials involved. Some of the later hold well enough that
the fastener will break/deform before the bond releases.
If the screw is one that a repair shop would need to remove in the normal course
of ordinary repairs, there is likely to be a nondestructive release process. I
say this as some manufactures are using high strength threadlockers where
disassembly is not intended or.... When I have this sort of challenge with
something I definitely don't want to damage, I try to find a manufacturer's tech
or third part repair shop (as many will share repair "secrets") .
Repeating what others have said before, I have found through sad experience that
it pays to be very careful when applying heat or excessive torque to precision
equipment of current manufacture. Appearances can be deceiving.
Good Luck
Otis Wright
Greg & Polly Wiseman wrote:
> Frank,
>
> I had two thoughts on your problem. The first has already been stated - the
> use of penetrating oil such as "Liquid Wrench" or Kano Labs "Kroil".
> However, if a thread lock substance such as "Loctite" was used I am not sure
> if the penetrating oils will work. If the screws are anchored in metal (be
> sure that the screw is actually screwed into metal and not just screwed
> through a metal face into a plastic base) then you may try to heat them with
> a small, clean soldering iron. This may be a completely STUPID idea for
> lens work but heating a stuck fastener is a common method for larger work.
>
> Greg & Polly
>
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