Quote:
Originally Posted by Merlin66
To minimise the chance of threaded adaptors binding, wipe a SMALL dab of boot polish (your choice of colour ;-) ) on the threads.
This will not melt or out-gas preventing problems with optics etc.
WD40, vaseline, grease etc are NOT recommended.
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To be clear - I was advocating WD40 only for releasing already bound adapters - assuming they can be isolated and are not attached to the scope/ccd. Not at all to be used near optics.
For prevention my preference is still PTFE tape but it can be tricky to apply if the threads in question are low profile.