Screw chuck

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Forum topic by patchy posted 06-16-2009 05:56 AM 1085 views 0 times favorited 2 replies Add to Favorites Watch
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10 posts in 3718 days

06-16-2009 05:56 AM

Hi guys,
long time since I visited – due to ill health.

Now having gone back into my workshop I find I am having a terrible time trying to use a screw chuck. No matter how much care I take drilling the pilot hole and entering the screw, I find the blank always seems to be
a long way away from parallel to the chuck face.

Is it possible that my screw does not fit properly in my chuck? I use a DR300 and the chuck and screw is from Teknatool. I have taken to using a Cole jaw chuck but it is a pain in that I have to keep dismantling things (only 1 3 – jaw chuck).

The screw is simply that – a 3/8 ” screw with a small flange and scalloped boss.

I’m probably not explaining this very well – the item is shown at

and is exactly what I have, that is, a chuck with the ‘woodworm screw’ shown chucked.

Any help will be appreciated.

2 replies so far

View kolwdwrkr's profile


2821 posts in 3789 days

#1 posted 06-16-2009 11:32 PM

If the jaws of the chuck are clamping the screw in the correct places it should be square to the chuck. So when you drill your hole, if you drill it perfectly straight into your work piece it should align with your chuck when you tighten it on. I use a drill press to predrill for the screw. You may just need to tighten the piece more onto the chuck. Sometimes the threads tend to push the piece seemingly crooked, so just keep tightening it until it is square to the chuck. If that mumbo jumbo makes sense. LOL

-- ~ Inspiring those who inspire me ~

View SCOTSMAN's profile


5849 posts in 3784 days

#2 posted 06-16-2009 11:37 PM

It could be that your just using very unevenly cut wood,I take it the screw is designed for the job and the hole is long enough to bring it up face to face with the wood I cannot see any other reason.If you expect it to run true it wont you need to face up the wood anyway no matter what screw your using keep patient you will find out what’s wrong with it.Alistair

-- excuse my typing as I have a form of parkinsons disease

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