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Re: thread on bottom of camera

Posted by Rick Merrill on 10/10/07 12:47

Richard Crowley wrote:
> "Rick Merrill" wrote ...
>> On the bottom of my camera is a threaded hole
>> for mounting on a tripod. This hole is busted!
>> I need a helicoil insert to fix it.
>>
>> What is the pitch of the thread on cameras/tripods?
>
> 1/4-inch diameter by 20 threads per inch. ("1/4-20")
> for smaller cameras. 3/8-20 for larger cameras.
>
> Note that if you want to end up with the industry-standard
> 1/4-20 threads, you have to tap the hole *larger* than that
> to accomodate the HeliCoil insert.
>
> Note further that the tripod holes in the bottom of cameras
> tends to be very shallow and "dead-end" which would not
> permit you to re-tap for HeliCoil.
>
> However, in many of the cameras I have used the threaded
> piece is screwed on and can be replaced (because you are
> not the first user to have the threads go bad.)
>
>

It looks like the original had the helicoil epoxied in place.
So I thought I'd try that - assuming I can get the old epoxy out!

quarter twenty! - I could have tested it myself, but I love asking
the experts!

 

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