chuck screw...screwed !!

[Evanism]

Hi evanism,
Yeah I know, but If we NEED MORE TOOLS............why not!
and also If it won, t come out I could have to get a new chuck!
Thanks for your thoughts too!

Maaaaatteee! If you saw my expenditure on toys over the last 3 years you'd be horrified! I'm the very last person to advise a person against buying some one-off highly specialized esoteric non-necessity. Twice.

[mjl09]

.............. What Evanism said ! ..................

Forget all this stuff about Grabit's, EasyOuts and other screw extractor tools. They're not needed in this case. And anyway, I'm not sure you'd get a screw extractor small enough to do this job anyway, as the screws that hold the jaws on a Teknatool Chuck measure only 5.5 mm diameter across the threads.

After you've drilled the screw head off, you'll only have about 1 to 2 mm of thread left poking out, but (unless the screw thread is crossed or otherwise bound up) you should still be able to use your fingers to unscrew the remains of the screw.

Regards,

Roy

In terms of the Grabits - 5 mm does not pose a problem a number 1 grabit does suit a 5 mm (and 6 mm) metric bolt, an indeed since your working on the head in this case might actually require a larger one as you would be operating on the deformed allen key head rather than the 5.5 mm thickness of the thread itself.

If you then look at the micro size grabits they cover the range of 3-6 mm metric bolts.

The hardness of bolt/screw is another question but the info on the website suggests can drill up to grade 8 and class 10.9 fasteners

[smiife]

Hi guys,
I finally found some time to get to the chuck!
Thanks again too everyone for there suggestions
and ideas, I thought i would try them all in this order......

1st , cut off a allen key, placed in the offending screw
and bashed the you know what out of it.! then tried
to turn with multi-grips..........

2nd, centre punched it in the same fashion ! ..........


3rd, tried the grabits, knowing if that failed i could still
drill the head off the !?*#@£÷=% thing!!!..........and hey presto
out it came, I had only drilled the head out to use the other end
but didn, t need too! it just came straight out,, (so i guess it was
a combination of left hand threaded drill and the grabits,, the
screw held so tight on the drill part i had to put it in the vice
to get it off!
have posted some piccy, s of the process

Thanks again to all for your help and interest

[mjl09]

Glad your back in business !!!

[Mobyturns]

Hi guys,
I finally found some time to get to the chuck!
Thanks again too everyone for there suggestions
and ideas, I thought i would try them all in this order......

1st , cut off a allen key, placed in the offending screw
and bashed the you know what out of it.! then tried
to turn with multi-grips..........

2nd, centre punched it in the same fashion ! ..........


3rd, tried the grabits, knowing if that failed i could still
drill the head off the !?*#@£÷=% thing!!!..........and hey presto
out it came, I had only drilled the head out to use the other end
but didn, t need too! it just came straight out,, (so i guess it was
a combination of left hand threaded drill and the grabits,, the
screw held so tight on the drill part i had to put it in the vice
to get it off!
have posted some piccy, s of the process

Thanks again to all for your help and interest

Good to see its operational again.

This is what Rob McKee's tip suggests - make a number (6) centre punch marks in the flat to deform the metal head around the allen key.

Stuck Cap Screws .jpg

[chuck1]

So you found the left hand drill ok!? Good to see it's all sorted!

[smiife]

337341[/ATTACH]

Hi mobyturns,
Yeah,, I can see how that would work too !
Thanks ,,

So you found the left hand drill ok!? Good to see it's all sorted!

Hi chuck,
Yeah, one end of the grab-It is in fact a left hand threaded drill!
once drilled to the correct depth , you are supposed to turn It
around and use the other end, but I didn, t need to, It just came
straight out, with the drill ,,,,! Thanks again

[wheelinround]

Been watching this glad you got it out. Not sure hammering the chuck on the lathe a good idea
The photo of the jaws altogether shows some rough surface in the offending dovetail area that may have been the cause acting like a spring washer.

[smiife]

Been watching this glad you got it out. Not sure hammering the chuck on the lathe a good idea
The photo of the jaws altogether shows some rough surface in the offending dovetail area that may have been the cause acting like a spring washer.

Hi wheelie,
Yeah, ... I just gave it a short sharp tap, but didn, t do any good!
I am soaking the jaws, and will strip the chuck and regrease it
on the weekend, then all I need are some new screws......hey jim!!
That reminds me ,, must watch , s video again
Thanks again guys

[Paul39]

I have found it is helpful to take the chuck off the spindle and the jaws off the chuck every 6 months or so and clean and lightly oil all threads before putting back together.

Saves having to beat the daylights out of the sticking parts to the possible detriment of the spindle bearings.

Smiife, glad to hear you won that one.

[smiife]

I have found it is helpful to take the chuck off the spindle and the jaws off the chuck every 6 months or so and clean and lightly oil all threads before putting back together.

Saves having to beat the daylights out of the sticking parts to the possible detriment of the spindle bearings.

Smiife, glad to hear you won that one.

Hi paul,
Yeah,,,, I will certainly be doing a bit of maintenance in future
Thanks for your help too!