How could this happen?!!

[emadmoussa]

My UHC-S filter somehow got stuck into the 1.25" to 2" adapter...I did that several times before, but last night when I tried to remove the filter it was impossibly stuck. Can't even budge it. Hilarious!!

What are the odds of this is happening?! LOL... And no, it didn't tighten very hard to begin with...still weird how this is happened though.

[Cath]

Slightly different metals maybe that expand/contract at slightly different rates with temperature?

Just guessing.

[Mr Spock]

Sounds like BFT to me (blunt force trauma).

It's either too tight or cross-threaded

[Pig]

It sounds like some dirt or dust has got in between the threads, a gentle tapping on a hard surface while unscrewing, and patience, can sometimes work to free them up.

[emadmoussa]

It's too tight, I tried tapping and unscrewing..couldn't move it at all. I'll run some hair dryer hot  air on the adapter and see if I can get it to expand a bit. It might help. Otherwise, I'll need another adapter and another filter since I can't use the current accidental combination with 2" eyepieces.

[MadAlbert]

Just a thought, try the heat treatment but also consider sticking it into the fridge (or freezer) for a bit and try again...

[JamesF]

And try undoing it whilst wearing a pair of pink marigolds.

James

[Naemeth]

And try undoing it whilst wearing a pair of pink marigolds.

James

Indeed, try this thread for more ideas:

http://stargazerslounge.com/topic/199883-cold-welded-darn-it/

[Mav359]

Get yourself a boa constictor strap/wrench

http://www.amazon.co.uk/Misc-Boa-Constrictor-Strap-Wrench/dp/B0001P0EUA

That'll get it (might need two)

[emadmoussa]

Thanks for the tips. Will try again this afternoon.

[stevepeverall]

Exactly the same thing happens all the time with my UHC-S filter on my diagonal Emad.

I only do the thing up lightly, finger-tight and it becomes imposiible to budge aven a bit no matter how force I use.

I've found the trick is to use as little force as possible using just the tips of my fingers. If it doesn't budge just move the fingers around the circumference of the filter slightly and repeat until works. The trick is to use as little effort as possible.

[emadmoussa]

OK - sorted. I put the adapter in front of the blow heater for few seconds and the filter came off effortlessly.

[ScottS]

And try undoing it whilst wearing a pair of pink marigolds.

James

Does being pink help?

[JamesF]

Does being pink help?

Not really.  But it looks funnier

James

[Peter Drew]

Anodised aluminium threads tend to be very "grabby", it pays to apply a minimum amount of boot polish, vaseline or similar "lubricant" to the threads. Next, thoroughly wipe it off, the amount that you then leave on is enough to stop them sticking again. 

[Lee M]

Anodised aluminium threads tend to be very "grabby", it pays to apply a minimum amount of boot polish, vaseline or similar "lubricant" to the threads. Next, thoroughly wipe it off, the amount that you then leave on is enough to stop them sticking again. 

Might something dry like graphite be a good option?

[Guest]

or you could try some sailkote  (see if a mate has a Dob and might have used some to tweak the base with it.)

http://www.gaelforcemarine.co.uk/41510/Harken-McLube-Sailkote-Spray.html