re: locked shen hao knob

<p>Hello<br /> I have a <a href="http://www.shen-hao.com/PRODUCTSabout.aspx?i=953&id=n3">Shen Hao PTB45</a> and one of the knobs you need to turn in order to unfold the camera has locked tight. I have tried loosening it with WD40 but have had no luck. Someone has recommended I try using a mole or locking grip. Does anyone have any experience of a similar problem? I'm concerned this might damage it, if it's a crossthread. <br /> Any help greatly appreciated.<br /> Thanks a lot.<br>

<img src="blob:https://web.whatsapp.com/d60df19f-f38f-44b6-89ec-b701d632475e" alt="" /> <img src="blob:https://web.whatsapp.com/75c5cf6a-87ab-41c5-abde-0a132c3b28ab" alt="" /></p>

 

Uuugggh... That doesn't sound good. If lubricant

didn't help try some heat on the knob. I'm assuming

brass on brass, right? Heat will expand the knob

more than the shaft and may break it free.

Whatever you do, go at it gently but persuasively.

Whatever that means, right. Unfortunately, I it is

cross threaded the damage is already done for the

most part... So start gentle and advance in terms of

aggressiveness only when the gentle approaches

fail. Good luck!

<p>Aluminium alloy, according to the Shen Hap website.<br>

Thanks for your reply... I've ordered a locking grip (local hardware shop, which recommended one, didn't stock any) so I'll give it a go tomorrow. <br>

>Whatever you do, go at it gently but persuasively. Whatever that means, right.<br>

Haha. I'd like to think I know what you mean. Suppose I'll find out tomorrow!</p>

<p>Sometimes when tightening a knob it takes 10 times more force to loosen it than was used to tighten it. I would wrap the knob with a rubber jar opening aid and give it a go. If you cannot loosen it by hand then use a pair of pliers or similar.</p>