[pure-silver] Re: messed-up threads on tripod head
- From: stephen moss <swmoss@xxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 18 Jun 2014 22:55:17 -0300
Just in case no one mentioned it earlier. If you are using a tap to
cleanup or finish threading on a blind hole you need a "bottoming" tap
which has very little taper so it can cut thread almost all the way to
the bottom of the hole.
On 18/06/14 10:16 PM, Richard Knoppow wrote:
>
> Most tripod screws are 1/4-20, that means 1/4 inch diameter and 20
> threads per inch, a standard size. You If you can get the screw out
> of the hole run a tap into the hole as advised by others. You can get
> a tap at any hardware store plus you may need to get a tap wrench. You
> may want to bring the thing to the store. The tap should be lubricated
> with light oil. Work turn the tap in slowly and work it back and forth
> while going further in. That will straighten the hole. The screw may
> also need treatment. See if it will thread into a 1/4-20 nut easily.
> If not you will need to get a 1/4-20 die. That is the opposite of the
> tap and cuts threads on the male part. Used much the same way as the
> tap, work it slowly a little at a time with some light oil lubricant.
> These are not particularly expensive tools and will last a long time
> if used with a bit of care. Some old fashioned hardware stores may
> just do the job for you.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk@xxxxxxxxxxxxx
> ----- Original Message ----- From: "shannon Stoney"
> <shannonstoney@xxxxxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Wednesday, June 18, 2014 12:43 PM
> Subject: [pure-silver] messed-up threads on tripod head
>
>
>
> I have an old tripod head that I bought used: it's a Gitzo and it
> probably dates to the 80s or something. I have used it for 15 years.
> One day about a month ago the tripod fell over, and the screw in it
> got sort of knocked to one side. As a result I can't get the screw in
> and out very easily. The screw itself seems to be fine, but the
> threads on the inside of the hole seem to be a little battered. Is
> this something a machine shop can fix, or is this tripod head not
> salvageable?
>
>
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--
Stephen Moss
Sent using Carrier Pigeon Deluxe version 42.0
Never eat crow again.
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