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Nova Midi won't close question!

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Forum topic by Roadhouse posted 02-20-2016 08:48 AM 569 views 0 times favorited 6 replies Add to Favorites Watch
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Roadhouse

2 posts in 292 days


02-20-2016 08:48 AM

Topic tags/keywords: lathe

I have a Harbor Freight lathe and a Nova Midi 4 jaw chuck. When I put the chuck on and try to tighten it down to hold my worm screw that came with it, the jaw guides hit the end of my spindle and won’t close all the way. Is there a spacer I need to bring the chuck out farther on the spindle?

Thanks!


6 replies so far

View LeeMills's profile

LeeMills

271 posts in 767 days


#1 posted 02-20-2016 08:27 PM

I have heard of that before (not necessarily with a Nova or HF).
You may have problems with other brands of face plates and other devices also. I assume the HF spindle is just a little longer than standard.

A thick washer from a hardware store may work in a pinch but it will not be ground flat and may induce some runout.
In an early (1980’s) Del Stubbs video he had to do the same with a screw chuck.

I’m not a fan of the “anti-lock” washers but they are at least flat to start with but may deform over time from use.
http://www.packardwoodworks.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=lathes-acc-fp-antwasr

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

View Wildwood's profile

Wildwood

1886 posts in 1600 days


#2 posted 02-20-2016 10:45 PM

You have to close the jaws so tightens in that slot of the wood worm screw. Instructions for that chuck say same thing on how to install woodworm screw. If that is not happening don’t know what to tell you. My Oneway chuck works the same way.

http://www.packardwoodworks.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=packard&Category_Code=chuck-fourjaw-nova-midi

-- Bill

View Roadhouse's profile

Roadhouse

2 posts in 292 days


#3 posted 02-21-2016 12:46 AM

Thanks for the info guys. I’ll have to play around with some spacers and/or mounting the worm wood screw first.

View caine's profile

caine

2 posts in 1477 days


#4 posted 02-21-2016 03:40 PM

make a wooden washer out of 1/4’’ plywood i had the same problem .the spindle on the harbor freight lathe is longer than the spindle on my jet 1220 lathe.

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xmastree

43 posts in 445 days


#5 posted 02-21-2016 03:53 PM

How much of the HF spindle’s excess length would you estimate you’d have to machine off for the Chuck jaws to clear?
To measure, close the jaws and install the Chuck on the spindle. When it stops threading on, simply measure the gap between the spindle’s shoulder and the chuck’s mating surface.
If you’re only talking about a millimeter or two, that could be machined off easily, and then the spindle would be standard and you wouldn’t have to worry about spacers and runout.

-- Every tree is a Chistmas tree with its gifts hidden inside.

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xmastree

43 posts in 445 days


#6 posted 02-21-2016 06:34 PM

Hmmm.. I’ve checked online and I see the the HF spindle might not lend itself to the method I mentioned above, though mine does.
I would imagine some manufacturer would offer machined spacers for this kind of issue.(?)

-- Every tree is a Chistmas tree with its gifts hidden inside.

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