[modeleng] Re: Damaged 4 jaw chuck
- From: "alanjstepney" <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Thu, 16 Dec 2004 18:24:47 -0000
Yes. Take it apart. Not easy to do, but they do come apart in some way.
Then examine all the parts to see what is bent / jamming / whatever.
After that, it is easy.
alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
www.alanstepney.info
Model Engineering, Steam Engine, and Railway technical pages.
----- Original Message -----
From: "Dennis Rayner" <dennis.rayner@xxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Thursday, December 16, 2004 5:59 PM
Subject: [modeleng] Damaged 4 jaw chuck
Hi all,
I have damaged the 4 jaw chuck which came with my very secondhand, very
old ML7. The chuck didn't have a key - only an allen key and (I know I
shouldn't have) I put a 12" length of copper tube over the key to make sure
that the item being held wouldn't move.
Now all 4 adjusting screws are very tight to turn, making it very difficult
to feel just how much I am tightening the grip. If I remove the jaws, the
screws are still quite stiff to turn so it seems I have damaged them rather
than the jaws. I have spoken to the (very helpful) spares dept at Myford
quoting all the ID I can get off the chuck and backplate in the forlorn hope
that I might still get the screws but to no avail.
The only thing I can now think of is to run the screws in and out using
my cordless drill with some Valve Grinding Paste on the threads. Drastic I
know but I wonder if anyone can think of a better approach?
Christmas greetings to the group.
It's fun to belong!
Dennis
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