Stuck Battery Grip

I have a KP to which I recently attached a (genuine) battery grip. Unfortunately it is proving difficult to remove. The grip has been fitted once before when I bought it, and I don't recall it being difficult to remove then.

Any suggestions on how to proceed?

Please can someone confirm which way the screw wheel should turn to undo? I have assumed it should be turned anti-clockwise when viewed from the underside (i.e looking at the female tripod attachment screw thread), but I don't want to force it.

Thanks in advance.

With the camera in your hands to use it as normal, I.e grip downwards and the lens facing away from you, it's clockwise ro undo the grip.

Thanks Chris. Unfortunately the wheel is still too stiff to turn by hand. Whilst I have a large wrench that could add some extra leverage, I am loth to do so until all possible options that avoid damage have been tried.

Any further ideas anyone?

Is there something causing this that I might have done accidentally when I put it on?

I've done the same myself in the past and yes it does feel as though it won't turn by hand - I found one of those extra thick elastic bands, positioned it around the grip then I was able to free it by hand (eventually). Might be worth you you giving it a try - hope it works for you!

If you put it on when it was warm then the present cold weather will have tightened it up considerably. If you have one, put it in the airing cupboard to warm up for a few hours and try again.

When mine are tight I find by holding the camera as described earlier and by using 2 x thumbs ( clockwise) I can loosen the thumb wheel.

Lens pointing to the floor, left thumb on wheel and pull left...dry hands useful. Good luck.

Belated thanks to all who have offered suggestions.

It is still not sorted, although I did miss an opportunity to buy a thick elastic band recently as LennyBloke suggested. I have tried leaving it in the sun for a morning in case it was due to the temperature scenario, but with no luck. I am considering trying again using a hot air drier.

Will the opposite work? Leaving it in a cold place?

The wheel has indentations to assist grip. Put the blade of a slot screwdriver into one of the indentations, angle the screwdriver and tap GENTLY on the end of the screwdriver handle in the correct direction.